56 citations · 208 across the 17 of their papers we have counts for
17 papers
Entanglement recovery by reversing the effect of noise in quantum repeater
Sewon Jeong, Shrobona Bagchi, Jaehak Lee +4
We propose a method to directly recover the degree of entanglement distributed by entanglement swapping in the presence of noise. Our approach introduces a reversing operation that…
Interactions of pre- and postselected quantum particles
Gregory Reznik, Jan Dziewior, Shrobona Bagchi +1
An approach for analysis of effective interaction between pre- and postselected quantum particles is developed. It is argued that the cases of complete pre- and postselection of pa…
Concurrence speed limit and its connection with bounds in many body physics
Shrobona Bagchi
Quantum speed limit is a fundamental speed limit for the evolution of quantum states. It is the single-most important interpretation of the time energy uncertainty relation. Recent…
Non-Zero Mean Quantum Wishart Distribution Of Random Quantum States And Application
Shrobona Bagchi
Random quantum states are useful in various areas of quantum information science. Distributions of random quantum states using Gaussian distributions have been used in various scen…
A review on the questions of spin and spin quantum correlations in the relativistic regime
Shrobona Bagchi
The majority of current understanding of the quantum correlations is in the field of non-relativistic quantum mechanics. To develop quantum information and computation tasks fully,…
Stronger Quantum Speed Limit For Mixed Quantum States
Shrobona Bagchi, Dimpi Thakuria, Arun Kumar Pati
We derive a quantum speed limit for mixed quantum states using the stronger uncertainty relation for mixed quantum states and unitary evolution. We also show that this bound can be…
Quantum Speed Limit From Tighter Uncertainty Relation
Shrobona Bagchi, Abhay Srivastav, Arun Kumar Pati
The quantum speed limit provides a fundamental bound on how fast a quantum system can evolve between the initial and the final states under any physical operation. The celebrated M…
Photons are lying about where they have been, again
Gregory Reznik, Carlotta Versmold, Jan Dziewior +5
Bhati and Arvind [Phys. Lett. A, 127955 (2022)] recently argued that in a specially designed experiment the timing of photon detection events demonstrates photon presence at a loca…
Uncorrelated problem-specific samples of quantum states from zero-mean Wishart distributions
Rui Han, Weijun Li, Shrobona Bagchi +2
Random samples of quantum states are an important resource for various tasks in quantum information science, and samples in accordance with a problem-specific distribution can be i…
Failed attempt to escape from the quantum pigeon conundrum
Yakir Aharonov, Shrobona Bagchi, Justin Dressel +3
A recent criticism by Kunstatter et al. [Phys. Lett. A 384, 126686 (2020)] of a quantum setup violating the pigeon counting principle [Aharonov et al. PNAS 113, 532 (2016)] is refu…
Remote Creation of Quantum Coherence via Indefinite Causal Order
Jasleen Kaur, Shrobona Bagchi, Arun Kumar Pati
Quantum coherence is a prime resource in quantum computing and quantum communication. Quantum coherence of an arbitrary qubit state can be created at a remote location using maxima…
Footprints of quantum pigeons
Gregory Reznik, Shrobona Bagchi, Justin Dressel +1
We show that in the mathematical framework of the quantum theory the classical pigeonhole principle can be violated more directly than previously suggested, i.e., in a setting clos…
Inferred-variance uncertainty relations in the presence of quantum entanglement
Shrobona Bagchi, Chandan Datta, Pankaj Agrawal
Uncertainty relations play a significant role in drawing a line between classical physics and quantum physics. Since the introduction by Heisenberg, these relations have been consi…
Tighter Uncertainty and Reverse Uncertainty Relations
Debasis Mondal, Shrobona Bagchi, Arun Kumar Pati
We prove a few novel state-dependent uncertainty relations for product as well the sum of variances of two incompatible observables. These uncertainty relations are shown to be tig…
Uncertainty relations for general unitary operators
Shrobona Bagchi, Arun Kumar Pati
We derive several uncertainty relations for two arbitrary unitary operators acting on physical states of a Hilbert space. We show that our bounds are tighter in various cases than…
Generalized Geometric Measure of Entanglement for Multiparty Mixed States
Tamoghna Das, Sudipto Singha Roy, Shrobona Bagchi +3
Computing entanglement of an arbitrary bipartite or multipartite mixed state is in general not an easy task as it usually involves complex optimization. Here we show that exploitin…
Monogamy, polygamy, and other properties of entanglement of purification
Shrobona Bagchi, Arun Kumar Pati
For bipartite pure and mixed quantum states, in addition to the quantum mutual information, there is another measure of total correlation, namely, the entanglement of purification.…