Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Rakshit, Debraj"'
Autor:
Sahoo, Ayan, Rakshit, Debraj
The localization-delocalization transition can be leveraged as a resource for achieving quantum-enhanced sensitivity in parameter estimation. We demonstrate that by employing different classes of localization-delocalization transition potentials one
Externí odkaz:
http://arxiv.org/abs/2408.03232
Quantum criticality has been demonstrated as a useful quantum resource for parameter estimation. This includes second-order, topological and localization transitions. In all these works reported so far, gap-to-gapless transition at criticality has be
Externí odkaz:
http://arxiv.org/abs/2407.14428
In this work we investigate the Stark localization near the Aubry-Andr\'{e} (AA) critical point. We study system-dependent parameters, such as localization length, inverse participation ratio (IPR), and energy gap between the ground and first excited
Externí odkaz:
http://arxiv.org/abs/2404.14971
Autor:
Ray, Tanaya, Mondal, Sayan, Bhattacharyya, Aparajita, Ghoshal, Ahana, Rakshit, Debraj, Sen, Ujjwal
We study the self-contained three-qubit quantum refrigerator, with a three-body interaction enabling cooling of the target qubit, in presence of baths composed of anharmonic quantum oscillators with Kerr-type nonlinearity. We show that such baths, lo
Externí odkaz:
http://arxiv.org/abs/2311.10499
Autor:
Argüello-Luengo, Javier, Bhattacharya, Utso, Celi, Alessio, Chhajlany, Ravindra W., Grass, Tobias, Płodzień, Marcin, Rakshit, Debraj, Salamon, Tymoteusz, Stornati, Paolo, Tarruell, Leticia, Lewenstein, Maciej
Publikováno v:
Commun Phys 7, 143 (2024)
In this Perspective article we report on recent progress on studies of synthetic dimensions, mostly, but not only, based on the research realized around the Barcelona groups (ICFO, UAB), Donostia (DIPC), Pozna\'n (UAM), Krak\'ow (UJ), and Allahabad (
Externí odkaz:
http://arxiv.org/abs/2310.19549
Autor:
Saha, Aitijhya, Rakshit, Debraj
In this work, we discuss a non-Hermitian system described via a one-dimensional single-particle tight-binding model, where the non-Hermiticity is governed by random nearest-neighbour tunnellings, such that the left-to-right and right-to-left hopping
Externí odkaz:
http://arxiv.org/abs/2310.13744
Publikováno v:
Phys. Rev. A 109, L030601 (2024)
We show that the delocalization-localization transition in a quantum-many body (QMB) systems is a compelling quantum resource for achieving quantum-enhanced sensitivity in parameter estimation. We exploit the vulnerability of a near-transition QMB st
Externí odkaz:
http://arxiv.org/abs/2305.02315
Publikováno v:
Phys. Rev. A 108, 052417 (2023)
We analyze the quantum resource generation of capacitively-coupled multilevel transmon circuits surrounded by bosonic baths, within the Markovian limit. In practice, the superconducting circuit elements are usually part of a larger circuit, construct
Externí odkaz:
http://arxiv.org/abs/2303.16136
Autor:
Salamon, Tymoteusz, Irsigler, Bernhard, Rakshit, Debraj, Lewenstein, Maciej, Grass, Tobias, Chhajlany, Ravindra
Stacking two layers of graphene with a relative twist angle gives rise to moir\'e patterns, which can strongly modify electronic behavior and may lead to unconventional superconductivity. A synthetic version of twisted bilayers can be engineered with
Externí odkaz:
http://arxiv.org/abs/2207.13013
Repetitive measurements can cause freezing of dynamics of a quantum state, which is known as quantum Zeno effect. We consider an interacting one-dimensional fermionic system and study the fate of the many-body quantum Zeno transition if the system is
Externí odkaz:
http://arxiv.org/abs/2107.14647