BrainMap

Mr. Doru Cristian Sticlet

CS III

CS III - INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Researcher | Scientific reviewer

Curriculum Vitae (12/06/2023)

Expertise & keywords

Dynamics and correlations in non-Hermitian and open quantum systems Call name: P 5.1 - Proiecte de Cercetare Exploratorie - Competiția 2023
PN-IV-P1-PCE-2023-0159 2025 - 2027

Role in this project:

Coordinating institution: UNIVERSITATEA DIN ORADEA

Project partners: UNIVERSITATEA DIN ORADEA (RO)

Affiliation:

Project website: http://cl2.uoradea.ro/page3.html

Abstract:

This project aims to explore the dynamics, phase transitions, and scaling behavior of non-Hermitian and open quantum systems. While traditional quantum systems have been described using Hermitian operators, recent research has delved into the realm of non-Hermitian systems, characterized by complex eigenvalues and non-orthogonal eigenstates. These systems find applications in optics, condensed matter physics, and quantum information science. Non-Hermitian systems are inherently connected to open systems, where interactions with the environment result in dissipation and decoherence. Understanding the interplay between non-Hermitian and open dynamics presents theoretical and experimental challenges, necessitating innovative mathematical tools and experimental techniques. The project encompasses three research directions: (1) Floquet dynamics in dissipative systems, (2) measurement and dissipation-induced phase transitions and time evolution, and (3) infinite and negative temperature dynamics and the Kardar-Parisi-Zhang (KPZ) scaling. The project's outcomes will advance understanding of non-Hermitian and open systems, provide insights into the behavior of quantum systems under periodic driving, dissipation, and measurements, and pave the way for potential applications in quantum technologies and the exploration of novel quantum states of matter.

Towards a Theory of Non-Hermitian Superconductivity: Mean-field Approximations, Impurity Effects, and Quantum Processing Call name: P 5.1 - Proiecte de Cercetare Exploratorie - Competiția 2023
PN-IV-P1-PCE-2023-0987 2025 - 2027

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation:

Project website: https://www.itim-cj.ro/pncdi/nhsuper/

Abstract:

Our project explores the field of non-Hermitian physics, with a focus on superconductivity in fermionic systems. The goal is to develop a general theory of non-Hermitian superconductivity, and investigate the effects of impurities in non-Hermitian superconductors. By treating superconductors as open quantum systems and employing Lindblad equations, we aim to derive non-Hermitian superconductor Hamiltonians and understand their dynamics under the interplay of dissipation, Coulomb interactions, and electron-phonon coupling. Finally, the project aims to contribute to quantum technologies by proposing the simulation of non-Hermitian systems in circuit quantum electrodynamics. In particular, it aims to realize, manipulate, and measure multi-level superconducting qubits implementations for higher-order exceptional points.

The project has the potential to advance research in non-Hermitian systems, provide insights into the behavior of impurity-induced states, and contribute to the development of quantum technologies that harness dissipation as a resource.

Quantum theory of weak field magnetrotransport for topological multiband systems Call name: PNCDI IV, SP 5.8.3 - Proiecte de mobilitate, PM-RO-FR-2024
PN-IV-P8-8.3-PM-RO-FR-2024-0059 2024 - 2025

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); Université Paris-Saclay si CNRS (FR)

Affiliation:

Project website: https://www.itim-cj.ro/bilateral/bmfr15/

Abstract:

Magnetotransport experiments (e.g. anomalous Hall effect, magneto-chiral effect, planar Hall effect, longitudinal magnetoreistance, etc.) are instrumental to characterize electronic properties of quantum materials. Yet, the interpretation and understanding of experimental results rest essentially on a semiclassical Boltzmann transport description that incorporates interband quantum geometric effects (Berry curvature, orbital magnetic moment, quantum metric, etc.) in a phenomenological way. The aim of the present project is to develop a microscopic quantum theory of magnetotransport of multiband systems. As a first step we are now developing a diagrammatic perturbative theory for the conductivity tensor up to quadratic order in magnetic field (which is still lacking in the community). In a second step, this quantum magnetotransport formalism will be applied to several models of multiband topological materials, in order to quantify quantum corrections beyond the semiclassical Boltzmann transport predictions.

Romanian National Quantum Communication Infrastructure Call name: PNCDI IV, P 5.8 - SP 5.8.2 - Europa Digitală
PN-IV-P8-8.2-EUD-2024-0036 2024 - 2025

Role in this project:

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation:

Project website: https://www.ronaqci.upb.ro/

Abstract:

RoNaQCI proposes the deployment of a 1500km+ QCI network including 6 metropolitan networks in the cities of Bucharest, Iasi, Cluj-

Napoca, Timisoara, Craiova and Constanta, with 36 QKD links spanning Romania and connecting 10 universities, 5 research institutes,

5 public bodies, 3 data centers and a medical clinic, and with future links planned for quantum Internet interconnecting with neighbors.

The project will be implemented by a consortium lead by UPB, the largest technical university in Romania and with key infrastructure

support from RoEduNet who manages the 6000km+ Romanian network for education and research. The consortium benefits from multi-

disciplinary expertise of 30 partners: 12 universities, 7 research institutes, 3 national agencies, 3 companies and 5 relevant stakeholders. It

includes both Romanian participants to QuantERA and 10/14 partners from all Romanian quantum communication projects (QUTECH-

RO, QSTRAT, QUANTEC). RoNaQCI will provide both upskilling and technology testbeds, establishing a national network of quantum

communication technology (QCT) hubs. Through them, RoNaQCI will produce a national QCT training and education standard. This

includes the development of a standard QCT certification and organizing workshops and training sessions to deliver a large number

of trained users in academia, public bodies and industry including internet service providers. RoNaQCI will develop and contribute to

open source software for QCI monitoring and exploitation including security certificates, VPN and SSH. RoNaQCI software will be

used for QCI testing, for 15 metropolitan advanced use cases on medical, financial and big data, public administration, research and

special communication and for 2 national use cases on education and special communication. RoNaQCI is developed in partnership with

national institutions such as the Romanian Naval Authority, the National Ministry of Education and the National Ministry of Defense.

Quantum Computation with Schrödinger cat states Call name: P 3 - SP 3.2 - Proiecte ERA.NET
ERANET-QUANTERA-QuCos 2020 - 2024

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO); Universität Innsbruck (AT); École Normale Supérieure de Lyon (FR); ECOLE NORMALE SUPERIEURE DE PARIS (FR); Karlsruher Institut für Technologie (DE); Quantum Machines Technologies Ltd. (IL)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Project website: https://www.itim-cj.ro/pncdi/qucos/

Abstract:

This project seeks to establish a radically new, alternative approach to realizing the fundamental building blocks of quantum computers with superconducting qubits. In the next 3 years, we plan to employ only a handful of realistic components to realize robust error-corrected logical quantum bits. We aim to demonstrate the same level of protection provided by a few hundreds of qubits (with properties beyond the state of the art) in today’s mainstream approach of the so-called surface code architecture. Our alternative approach is known as cat codes, because it employs multiple interconnected high coherence cavity modes with non-linear dissipation, to encode a qubit in superpositions of Schrödinger cat states. Our project combines realizing the quantum processor architecture as well as the control system and the protocols that drive it, building towards a full-stack error-corrected quantum computer. The partners in our collaboration form a strong synergetic group that has the full range of expertise needed to design and realize these systems, and to obtain these challenging goals. Furthermore, all partners of our project, including both industry and academia, have worked together and published works in the fields of quantum computing and quantum information processing.. We aim to implement error protected qubits, fault tolerant operations, and demonstrate the scalability of this approach by realizing a repetition code. Our project will enable quantum experiments towards the ambitious and well-defined goal of constructing a logical qubit, on which we can perform gates, and most importantly, quantum error-correctio (QEC). All algorithms with theoretically proven quantum speedup require QEC, therefore, with this project we are realizing an essential building block of a European error corrected quantum processor.

Stability of the conjugated sulfonamides MOFs used as electrode materials for lithium-ion batteries Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-0824 2021 - 2023

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Project website: https://www.itim-cj.ro/PNCDI/pce22/index.html

Abstract:

A broad variety of organic compounds have been proposed and studied as electrode materials for batteries over the last decades. However, to date, none of these chemistries are practically suitable for ready-to-assemble Li-ion battery applications. The conjugated sulfonamides (CSA) organic lithium ion cathode materials proposed recently pave the way to new avenues in the field or organic batteries; in particular, the MOFs fabricated using the CSAs have the potential to reach technological maturity..

Our investigations are focus on the study of the stability for a class of 25 structure of type CAS-MOF under cyclic voltametry. Chemical stability will be investigated by analyzing relevant information produced by density functional theory: Bader charges and bond-orders in different redox states, in bulk phase as well as in the molecular form; in this late case, we’ll take into account the presence of solvents. The thermodynamic stability will be investigated via the vibrational entropy of the CSA-MOFs as a function of temperature. Calculations will be done in two parts: ab-initio molecular dynamics, and the analysis of the atomic speeds by Fourier transform in the second part. The results are the vibrational density of states and thermodynamic potentials. The effect of our investigation is to speed up the progress in the field of CSA-MOF organic electrodes by using accurate predictions to narrow the spectrum of systems to be investigated in detail as cathode material.

Dynamics and entanglement in correlated systems Call name: P 4 - Proiecte de Cercetare Exploratorie, 2020
PN-III-P4-ID-PCE-2020-0277 2021 - 2023

Role in this project: Key expert

Coordinating institution: UNIVERSITATEA DIN ORADEA

Project partners: UNIVERSITATEA DIN ORADEA (RO)

Affiliation: UNIVERSITATEA DIN ORADEA (RO)

Project website: http://cfiz.uoradea.ro/?page_id=984

Abstract:

Non-equilibrium dynamics, correlations and entanglement have been investigated intensively both experimentally and theoretically. This allows us to address fundamental questions such as thermalization and equilibration, to introduce non-equilibrium quantum fluctuation relations, to analyze non-linear response.

Recently, there is a recent surge of interest in understanding and analyzing non-hermitian Hamiltonians. The intriguing physical effects embedded in such non-Hermitian physics triggered state of art developments in many branches of physics.

As a result of this progress the otherwise fundamental problems of quantum statistical physics, such as the structure of the “stationary” state of closed quantum systems, the formation of thermodynamic entropy and quantum entanglement during time evolution, the Kibble-Zurek mechanism across a quantum critical point or even the formation of non-equilibrium phases in excited quantum systems become relevant for non-Hermitic and open systems.

These problems are not only critical to today’s cold atomic and solid-state physics experiments, but a detailed description of time evolution is essential for quantum communication applications, quantum cryptography, quantum computations, and quantum simulations.

In the present proposal we plan to develop and apply new theoretical tools and computational methods that can be used to discover and explain new phenomena and mechanisms, and to obtain more accurate answers to problems like the above.

Superconducting phases and quantum transport in two-dimensional transition metal dichalcogenides Call name: P 1 - SP 1.1 - Proiecte de cercetare pentru stimularea tinerelor echipe independente
PN-III-P1-1.1-TE-2019-0423 2020 - 2022

Role in this project: Project coordinator

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Project website: https://www.itim-cj.ro/pncdi/te98/

Abstract:

Two-dimensional transition metal dichalcogenides (2D TMDs) are promising materials for both fundamental research and applications. In this project, we propose theoretical investigations of their remarkable properties in the superconducting phase as they are integrated into nanodevices or used to engineer Majorana bound states.

The 2D TMDs show a strong spin-orbit coupling which favors out of plane spins. This generates robust superconducting phases to in-plane magnetic fields since Cooper pairs are formed by electrons with out-of-plane spins. These properties may be harnessed in a variety of ways. In this project, we will focus on three relevant objectives:

1. Model and study quantum transport in planar Josephson junctions built from TMDs. Study the response to a magnetic field and gate voltage variation to obtain the nanodevice properties.

2. Study the coupling between vertically stacked superconducting TMDs. This is a promising realization of a Josephson junction, where weak van der Waals forces between the monolayers are the substitute for the usual metal or insulator between the superconductor leads. A relative twist of the 2D TMDs alters the properties of the Josephson junction and its effect remains an open question also interesting for fundamental research.

3. TMDs are a promising platform for topological superconductivity. Majorana bound states may be realized by deposition of magnetic atoms or molecules on a 2D TMD superconducting substrate. We investigate this physics in TMDs where at low temperature there is a coexistence of superconductivity and charge density wave order. The effect of the latter on topological superconductivity has not, at this date, been analyzed.

Developing quantum information and quantum technologies in Romania Call name: P 1 - SP 1.2 - Proiecte complexe realizate in consorții CDI
PN-III-P1-1.2-PCCDI-2017-0338 2018 - 2021

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH

Project partners: INSTITUTUL NATIONAL DE CERCETARE - DEZVOLTARE PENTRU FIZICA SI INGINERIE NUCLEARA " HORIA HULUBEI " - IFIN - HH (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU FIZICA LASERILOR, PLASMEI SI RADIATIEI - INFLPR RA (RO); INSTITUTUL NATIONAL DE CERCETARE- DEZVOLTARE PENTRU MICROTEHNOLOGIE - IMT BUCURESTI INCD (RO); UNIVERSITATEA POLITEHNICA DIN BUCURESTI (RO); INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Project website: https://roqnet.ro/qutech-ro/

Abstract:

Quantum information and quantum technologies are at the forefront of the second quantum revolution: quantum computers, quantum cryptography, quantum communication, quantum imaging/sensing etc. Quantum technologies are strategically important for the economic development -- the European Union recently announced a 1 Billion Euro Quantum Technologies Flagship (QT Flagship) program. Compared to other European countries, unfortunately these fields are seriously underdeveloped in Romania.

The project aims to develop quantum information and quantum technologies in Romania, such that the Romanian community will actively participate in the QT Flagship. The project director (R.I.) is National Quantum Coordinator for Romania in the coordination and support action preparing the European QT Flagship.

The project has three strategic objectives:

(i) research: developing the research capacity in quantum information and quantum technologies;

(ii) education: teaching and training PhD students, postdocs and researchers to work in these fields;

(iii) dissemination: disseminate and transfer the results to society in order to stimulate scientific and economic progress.

Each partner will be responsible for a project from the common research agenda:

1. IFIN-HH: developing theoretical and computational methods for quantum information and quantum technologies (Q-INFO)

2. INFLPR: developing the integrated quantum photonics platform (Q-CHIP)

3. IMT: quantum information with optical vortices (Q-VORTEX)

4. UPB: developing two research laboratories and a quantum source (Q-LAB)

(a) quantum computation lab: cloud programming the IBM-Q quantum computer;

(b) applied quantum information lab.

5. INCDTIM: developing theoretical models for quantum computation with Majorana fermions (Q-FERMI)

The project will result in the formation of the Romanian Quantum Network and the participation of Romania to the European QT Flagship.

Covalently bonded layers of phthalocyanine and porphyrin: a theoretical study Call name: P 4 - Proiecte de Cercetare Exploratorie
PN-III-P4-ID-PCE-2016-0217 2017 - 2019

Role in this project: Key expert

Coordinating institution: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M

Project partners: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Affiliation: INSTITUTUL NATIONAL DE CERCETARE DEZVOLTARE PENTRU TEHNOLOGII IZOTOPICE SI MOLECULARE I N C D T I M (RO)

Project website: http://www.itim-cj.ro/pncdi/colt/index.html

Abstract:

The requirement for more stable surface-confined self-assembled structures to be used as building blocks in various nanotechnology applications has led to great interest in covalently bonded two-dimensional molecular networks. Bidimensional structures formed by polymeric metal-phthalocyanine (M-Pc)/ porphyrin (Pp) are realistic candidates for practical applications. The fabrication of such layers has been proven to be feasible only recently; for example, we mention the use of a heating evaporator combined with the control of the layers growth by the temperature variation only. First goal of our proposal is to produce accurate theoretical data of the the physical properties and stability of the 2D structures formed by M-Pc/M-Pf as free and as adsorbed structures by using DFT and Quantum Monte-Carlo simulations. Since any defect present in 2D structures can alter the transport properties, we investigate the stability and properties of multilayered molecular structures formed by M-Pc/M-Pp, as a possible solution to inherent defect formation during the fabrication process. Our second objective is to describe the dynamics and reaction pathways leading to the formation of the M-Pc / M-Pp sheets at noble metal surfaces. As tool, we recall here the Nudged Elastic Band (NEB) method that can provide us a comprehensive picture of the M-Pc / M-Pf reactivity at surfaces. We see this as a tool for the experimentalists aiming for a better control during the fabrication of 2D covalently bond structures.

FILE DESCRIPTION	DOCUMENT
List of research grants as project coordinator or partner team leader
Significant R&D projects for enterprises, as project manager
R&D activities in enterprises
Peer-review activity for international programs/projects