8 citations · 29 across the 13 of their papers we have counts for
14 papers · 1 filter
Pure State Transformations under Block Coherence
Dipayan Chakraborty, Priyabrata Char, Indrani Chattopadhyay +1
Block coherence provides a natural generalization of standard quantum coherence by treating superpositions across different subspaces as a resource. This work studies deterministic…
Catalytic Enhancement of Coherence in Noisy Quantum Channels and Characterization of Strictly Incoherent Operations
Priyabrata Char, Dipayan Chakraborty, Indrani Chattopadhyay +1
In realistic quantum information processing tasks, quantum states are inevitably affected by environmental noise, leading to decoherence and degradation of useful quantum resources…
Entanglement concentration via measurement:- role of imaginarity
Indranil Biswas, Subrata Bera, Ujjwal Sen +2
The role of complex numbers in quantum theory extends beyond mathematical convenience, having recently been formalized as a resource under the framework of the resource theory of i…
Strong nonlocality with more imaginarity and less entanglement
Subrata Bera, Indranil Biswas, Atanu Bhunia +2
Complex numbers are central to the formulation of quantum mechanics, yet their role as a genuine resource is only beginning to be understood. In this work, we demonstrate that quan…
Genuinely entangled subspaces beyond strongly nonlocal unextendible biseparable bases
Subrata Bera, Atanu Bhunia, Indranil Biswas +2
Quantum information theory reveals a clear distinction between local and nonlocal correlations through the entanglement across spatially separated subsystems. The orthogonal comple…
Dilution of Entanglement: Unveiling Quantum State Discrimination Advantages
Atanu Bhunia, Priyabrata Char, Subrata Bera +3
The states in the three-qubit GHZ SLOCC class can exhibit diverse entanglement patterns, as they may have no entanglement in any reduced subsystems, or show entanglement across one…
Genuine Multipartite Nonlocality sharing under sequential measurement
Sk Sahadat Hossain, Indrani Chattopadhyay
The study of quantum nonlocality sharing has garnered significant attention, particularly for two-qubit and three-qubit entangled systems. In this paper, we extend the investigatio…
Entanglement of Assistance as a measure of multiparty entanglement
Indranil Biswas, Atanu Bhunia, Subrata Bera +2
Quantifying multipartite entanglement poses a significant challenge in quantum information theory, prompting recent advancements in methodologies to assess it. We introduce the not…
Exploring strong locality : Quantum state discrimination regime and beyond
Subrata Bera, Atanu Bhunia, Indranil Biswas +2
Based on the conviction of switching information from locally accessible to locally hidden environs, the concept of hidden nonlocality activation has recently been highlighted by B…
Multipartite Monogamy of Entanglement for Three Qubit States
Priyabrata Char, Dipayan Chakraborty, Prabir Kumar Dey +4
The distribution of entanglement in a multiparty system can be described through the principles of monogamy or polygamy. Monogamy is a fundamental characteristic of entanglement th…
Strong quantum nonlocality: Unextendible biseparability beyond unextendible product basis
Atanu Bhunia, Subrata Bera, Indranil Biswas +2
An unextendible biseparable basis (UBB) is a set of orthogonal pure biseparable states which span a subspace of a given Hilbert space while the complementary subspace contains only…
Tight upper bound of genuine four party Svetlichny type nonlocality with and without local filtering
Sk Sahadat Hossain, Biswajit Paul, Indrani Chattopadhyay +1
Identifying the nonlocality of a multiparty quantum state is an important task in quantum mechanics. Seevinck and Svetlichny [Phys. Rev. Lett. 89, 060401 (2002)], and independently…
More assistance of entanglement, less rounds of classical communication
Atanu Bhunia, Indranil Biswas, Indrani Chattopadhyay +1
Classical communication plays a crucial role to distinguish locally a class of quantum states. Despite considerable advances, we have very little knowledge about the number of meas…
Entangled state distillation from single copy mixed states beyond LOCC
Indranil Biswas, Atanu Bhunia, Indrani Chattopadhyay +1
No pure entangled state can be distilled from a or mixed state by separable operations. In , pure entanglement can be distilled by separable o…