Cat codes with optimal decoherence suppression for a lossy bosonic channel

L Li, CL Zou, VV Albert, S Muralidharan, SM Girvin… - Physical review …, 2017 - APS
We investigate cat codes that can correct multiple excitation losses and identify two types of
logical errors: bit-flip errors due to excessive excitation loss and dephasing errors due to …

Chip-to-chip entanglement of transmon qubits using engineered measurement fields

C Dickel, JJ Wesdorp, NK Langford, S Peiter… - Physical Review B, 2018 - APS
While the on-chip processing power in circuit QED devices is growing rapidly, an open
challenge is to establish high-fidelity quantum links between qubits on different chips. Here …

Distilling nonlocality in quantum correlations

SG Naik, GL Sidhardh, S Sen, A Roy, A Rai, M Banik - Physical Review Letters, 2023 - APS
Nonlocality, as established by the seminal Bell's theorem, is considered to be the most
striking feature of correlations present in spacelike separated events. Its practical application …

Quantum Nonlocality: Multicopy Resource Interconvertibility and Their Asymptotic Inequivalence

SB Ghosh, SR Chowdhury, G Kar, A Roy, T Guha… - Physical Review Letters, 2024 - APS
Quantum nonlocality, pioneered in Bell's seminal work and subsequently verified through a
series of experiments, has drawn substantial attention due to its practical applications in …

Randomness-Free Test of Nonclassicality: A Proof of Concept

Z Ma, M Rambach, K Goswami, SS Bhattacharya… - Physical Review Letters, 2023 - APS
Quantum correlations and nonprojective measurements underlie a plethora of information-
theoretic tasks, otherwise impossible in the classical world. Existing schemes to certify such …

Presence of quantum correlations results in a nonvanishing ergotropic gap

A Mukherjee, A Roy, SS Bhattacharya, M Banik - Physical Review E, 2016 - APS
The paradigm of extracting work from an isolated quantum system through a cyclic
Hamiltonian process is a topic of immense research interest. The optimal work extracted …

[PDF][PDF] Classical superdense coding and communication advantage of a single quantum

RK Patra, SG Naik, EP Lobo, S Sen, T Guha… - arXiv preprint arXiv …, 2022 - academia.edu
We analyze the communication utility of a single quantum system when the sender and
receiver share neither any entanglement nor any classical shared randomness. To this aim …

Two-qubit pure entanglement as optimal social welfare resource in bayesian game

M Banik, SS Bhattacharya, N Ganguly, T Guha… - Quantum, 2019 - quantum-journal.org
Entanglement is of paramount importance in quantum information theory. Its supremacy over
classical correlations has been demonstrated in a numerous information theoretic protocols …

Quantum advantage for shared randomness generation

T Guha, M Alimuddin, S Rout, A Mukherjee… - Quantum, 2021 - quantum-journal.org
Sharing correlated random variables is a resource for a number of information theoretic
tasks such as privacy amplification, simultaneous message passing, secret sharing and …

Activating strong nonlocality from local sets: An elimination paradigm

SB Ghosh, T Gupta, AA V, A Das Bhowmik, S Saha… - Physical Review A, 2022 - APS
Apart from the Bell nonlocality, which deals with the correlations generated from the local
input-output statistics, quantum theory exhibits another kind of nonlocality that involves the …