Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Mondal, Sayan"'
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
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
The Landauer principle states that decrease in entropy of a system, inevitably leads to a dissipation of heat to the environment. This statement is usually established by considering the system to be in contact with an environment that is initially i
Externí odkaz:
http://arxiv.org/abs/2309.09678
Autor:
Mondal, Sayan, Basu, Saurabh
We have studied the evolution of the topological properties of a band-engineered AB-stacked bilayer honeycomb structure in the presence of a Haldane flux. Without a Haldane flux, band engineering makes the band touching points (the so-called Dirac po
Externí odkaz:
http://arxiv.org/abs/2304.02880
Autor:
Mondal, Sayan, Basu, Saurabh
We study the topological properties of a Haldane model on a band deformed dice lattice, which has three atoms per unit cell (call them as A, B and C) and the spectrum comprises of three bands, including a flat band. The bands are systematically defor
Externí odkaz:
http://arxiv.org/abs/2211.13615
Publikováno v:
New J. Phys. 25 123020 (2023)
We show that the nearest neighbour entanglement in a mixture of ground and first excited states - a subjacent state - of the J1-J2 Heisenberg quantum spin chain can be used as an order parameter to detect the phase transition of the chain from a gapl
Externí odkaz:
http://arxiv.org/abs/2211.00623
Autor:
Mondal, Sayan, Basu, Saurabh
We study topological properties and the topological phase transitions therein for a semi-Dirac Haldane model on a honeycomb lattice in presence of an extended range (third neighbour) hopping. While in the absence of a third neighbour hopping, $t_3$,
Externí odkaz:
http://arxiv.org/abs/2203.16077
Autor:
Mondal, Sayan, Basu, Saurabh
We study the vanishing of the topological properties of a quantum spin Hall insulator induced by a deformation of the band structure that interpolates between the Dirac and the semi-Dirac limits of a tight-binding model on a honeycomb lattice. The ab
Externí odkaz:
http://arxiv.org/abs/2112.11737
Here we study the systematic evolution of the topological properties of a Chern insulator in presence of an electronic dispersion that can be tuned smoothly from being Dirac-like till a semi-Dirac one and beyond. The band structure under such control
Externí odkaz:
http://arxiv.org/abs/2010.09631
In recent years, predicting driver's focus of attention has been a very active area of research in the autonomous driving community. Unfortunately, existing state-of-the-art techniques achieve this by relying only on human gaze information, thereby i
Externí odkaz:
http://arxiv.org/abs/1911.10455