no code implementations • 26 Feb 2021 • Leela Ganesh Chandra Lakkaraju, Shiladitya Mal, Aditi Sen De
PT-symmetric quantum theory does not require the Hermiticity property of observables and hence allows a rich class of dynamics.
Quantum Physics
no code implementations • 9 Feb 2021 • Rivu Gupta, Saptarshi Roy, Shiladitya Mal, Aditi Sen De
Characterizing multipartite quantum correlations beyond two parties is of utmost importance for building cutting edge quantum technologies, although the comprehensive picture is still missing.
Quantum Physics
no code implementations • 23 Dec 2020 • Leela Ganesh Chandra Lakkaraju, Srijon Ghosh, Aditi Sen De
Quantum spin models with variable-range interactions can exhibit certain quantum characteristics that a short-ranged model cannot possess.
Quantum Physics Strongly Correlated Electrons
no code implementations • 22 Dec 2020 • Saptarshi Roy, Asmita Kumari, Shiladitya Mal, Aditi Sen De
Robustness in the violation of Collins-Linden-Gisin-Masser-Popescu (CGLMP) inequality is investigated from the dual perspective of noise in measurements as well as in states.
Quantum Physics
no code implementations • 16 Dec 2020 • Kornikar Sen, Chirag Srivastava, Shiladitya Mal, Aditi Sen De, Ujjwal Sen
Measurement-device-independent entanglement witnesses (MDI-EWs) never detect fake entanglement even under wrong measurements and for a particular kind of lossy detectors.
Quantum Physics
no code implementations • 15 Dec 2020 • Ahana Ghoshal, Sreetama Das, Amit Kumar Pal, Aditi Sen De, Ujjwal Sen
We show that quantum absorption refrigerators, which have traditionally been studied as of three qubits, each of which is connected to a thermal reservoir, can also be constructed by using three qubits and two thermal baths, where two of the qubits, including the qubit to be locally cooled, are connected to a common bath.
Quantum Physics Mesoscale and Nanoscale Physics
no code implementations • 10 Dec 2020 • Rivu Gupta, Shashank Gupta, Shiladitya Mal, Aditi Sen De
The local pre-processing employed here is based on positive operator valued measurements along with classical communication and we show that unlike dense coding with two-qubit random states, senders' operations are always helpful to probabilistically enhance the capabilities of implementing dense coding as well as teleportation.
Quantum Physics
