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Squeezed generalized amplitude damping channel
Squeezing of a thermal bath introduces features absent in an open quantum system interacting with an uncorrelated (zero squeezing) thermal bath. The resulting dynamics, governed by a Lindblad-type…
Quantum Cryptography: Key Distribution and Beyond
This work reviews the progress of quantum cryptography in the last decade, covering quantum key distribution and other applications, and highlights the need to understand more fully the role of quantum entanglement in everyday life.
Generalized quantum secret sharing
We explore a generalization of quantum secret sharing (QSS) in which classical shares play a complementary role to quantum shares, exploring further consequences of an idea first studied by…
Optimizing the discrete time quantum walk using a SU(2) coin
We present a generalized version of the discrete time quantum walk, using the SU(2) operation as the quantum coin. By varying the coin parameters, the quantum walk can be optimized for maximum…
BEYOND THE GOLDENBERG–VAIDMAN PROTOCOL: SECURE AND EFFICIENT QUANTUM COMMUNICATION USING ARBITRARY, ORTHOGONAL, MULTI-PARTICLE QUANTUM STATES
It is shown that maximally efficient protocols for secure direct quantum communications can be constructed using any arbitrary orthogonal basis, and it is established that no set of quantum states has an advantage over the others, barring the relative difficulty in physical implementation.
GENERAL CIRCUITS FOR INDIRECTING AND DISTRIBUTING MEASUREMENT IN QUANTUM COMPUTATION
This work provides general circuits that can be used to implement general circuits relevant to quantum error correction, measurement-based quantum computation and Bell state discrimination across a quantum network involving multiple parties.
A quantum-information theoretic analysis of three-flavor neutrino oscillations
- Subhashis Banerjee, A. Alok, R. Srikanth, B. Hiesmayr
- PhysicsThe European physical journal. C, Particles and…
- 14 August 2015
It is shown that a measure of nonclassicality, dissension, is nonzero for almost the entire range of time in the evolution of an initial electron-neutrino.
The quantum cryptographic switch
- N. Srinatha, S. Omkar, R. Srikanth, Subhashis Banerjee, A. Pathak
- Computer ScienceQuantum Inf. Process.
- 21 November 2011
We illustrate the principle of a cryptographic switch for a quantum scenario, in which a third party (Charlie) can control to a continuously varying degree the amount of information the receiver…
Symmetries and noise in quantum walk
We study some discrete symmetries of unbiased (Hadamard) and biased quantum walk on a line, which are shown to hold even when the quantum walker is subjected to environmental effects. The noise…
Non-Markovian Evolution: a Quantum Walk Perspective
- N. Kumar, Subhashis Banerjee, R. Srikanth, V. Jagadish, Francesco Petruccione
- MathematicsOpen Syst. Inf. Dyn.
- 9 November 2017
This work indicates certain non-Markovian channels that cannot be witnessed by the CP-divisibility criterion, and presents a general power-spectral technique based on a distinguishability measure such as trace-distance or correlation measuresuch as mutual information for disambiguation.