94 citations · 427 across the 26 of their papers we have counts for
26 papers
Role of quantum state texture in probing resource theories and quantum phase transition
Ayan Patra, Tanoy Kanti Konar, Pritam Halder +1
Building on the recently developed quantum state texture resource theory, we exhibit that the difference between maximum and minimum textures is a valid purity monotone in any dime…
Security of deterministic key distribution with higher-dimensional systems
Abhishek Muhuri, Ayan Patra, Rivu Gupta +2
We analyze the security of two-way quantum key distribution using arbitrary finite-dimensional systems, considering both individual and collective eavesdropping attacks, without th…
Limits on broadcasting non-stabilizerness through unrestricted operations
Rivu Gupta, Tanoy Kanti Konar, Ayan Patra +1
In the resource theory of non-stabilizerness, we prove that stabilizer operations cannot replicate or broadcast the "magic" resource of all quantum states in an arbitrary finite di…
Sequential information theoretic protocols in continuous variable systems
Sudipta Das, Ayan Patra, Rivu Gupta +2
In order to enable the sequential implementation of quantum information theoretic protocols in the continuous variable framework, we propose two schemes for resource reusability, r…
Qubit magic-breaking channels
Ayan Patra, Rivu Gupta, Alessandro Ferraro +1
We develop a notion of quantum channels that can make states useless for universal quantum computation by destroying their magic (non-stabilizerness) - we refer to them as magic-br…
Continuous variable dense coding under realistic non-ideal scenarios
Mrinmoy Samanta, Ayan Patra, Rivu Gupta +1
We analyze the continuous variable (CV) dense coding protocol between a single sender and a single receiver when affected by noise in the shared and encoded states, as well as when…
Dimensional advantage in secure information trading via the noisy dense coding protocol
Ayan Patra, Rivu Gupta, Tamoghna Das +1
The quantum dense coding (DC) protocol, which has no security feature, deals with the transmission of classical information encoded in a quantum state by using shared entanglement…
Information theoretic resource-breaking channels
Abhishek Muhuri, Ayan Patra, Rivu Gupta +1
We propose the notion of process resource-breaking channels that break the resource for a quantum information processing task. We examine the same using quantum dense coding and te…
Entangled universes in dS wedge holography
Sergio E. Aguilar-Gutierrez, Ayan K. Patra, Juan F. Pedraza
We develop a new setting in the framework of braneworld holography to describe a pair of coupled and entangled uniformly accelerated universes. The model consists of two branes emb…
Perfect transfer of arbitrary continuous variable states across optical waveguide lattices
Tonipe Anuradha, Ayan Patra, Rivu Gupta +1
We demonstrate that perfect state transfer can be achieved in an optical waveguide lattice governed by a Hamiltonian with modulated nearest-neighbor couplings. In particular, we re…
Holographic complexity of Jackiw-Teitelboim gravity from Karch-Randall braneworld
Aranya Bhattacharya, Arpan Bhattacharyya, Ayan K. Patra
Recently, it has been argued in [1] that Jackiw-Teitelboim (JT) gravity can be naturally realized in the Karch-Randall braneworld in dimensions. Using the `complexity=volum…
Production of genuine multimode entanglement in circular waveguides with long-range interactions
T Anuradha, Ayan Patra, Rivu Gupta +2
Starting with a product initial state, squeezed (squeezed coherent) state in one of the modes, and vacuum in the rest, we report that a circular waveguide comprising modes coupled…
Resource Theory of Non-absolute Separability
Ayan Patra, Arghya Maity, Aditi Sen De
We develop a resource theory for non-absolutely separable states (non-AS) in which absolutely separable states (AS) that cannot be entangled by any global unitaries are recognised…
Multimode advantage in continuous variable quantum battery
Tanoy Kanti Konar, Ayan Patra, Rivu Gupta +2
We provide an architecture for a multimode quantum battery (QB) based on the framework of continuous variable (CV) systems. We examine the performance of the battery by using a gen…
Quantum Dense Coding Network using Multimode Squeezed States of Light
Ayan Patra, Rivu Gupta, Saptarshi Roy +2
We present a framework of a multimode dense coding network with multiple senders and a single receiver using continuous variable systems. The protocol is scalable to arbitrary numb…
Significance of Fidelity Deviation in Continuous Variable Teleportation
Ayan Patra, Rivu Gupta, Saptarshi Roy +1
Performance of quantum teleportation is typically measured by the average fidelity, an overlap between the input and output states. Along with the first moment, we introduce the se…
Trans-IR Flows to Black Hole Singularities
Elena Caceres, Arnab Kundu, Ayan K. Patra +1
We study analytic continuations of holographic renormalization group (RG) flows beyond their infrared (IR) fixed points. Such "trans-IR" flows are a natural framework for describin…
Bath deformations, islands and holographic complexity
Aranya Bhattacharya, Arpan Bhattacharyya, Pratik Nandy +1
Considering a doubly holographic model, we study the evolution of holographic subregion complexity corresponding to deformations of bath state by a relevant scalar operator, which…
Coherence measure of ensembles with nonlocality without entanglement
Ayan Patra, Shiladitya Mal, Aditi Sen De
Irreversibility between preparation and discrimination processes is manifested in the indistinguishability of orthogonal product states via local operations and classical communica…
Partial islands and subregion complexity in geometric secret-sharing model
Aranya Bhattacharya, Arpan Bhattacharyya, Pratik Nandy +1
We compute the holographic subregion complexity of a radiation subsystem in a geometric secret-sharing model of Hawking radiation in the "complexity = volume" proposal. The model i…
Page Curves and Bath Deformations
Elena Caceres, Arnab Kundu, Ayan K. Patra +1
We study the black hole information problem within a semiclassically gravitating AdS black hole coupled to and in equilibrium with a -dimensional thermal conformal bath. We…
Efficient nonlinear witnessing of non-absolutely separable states with lossy detectors
Ayan Patra, Shiladitya Mal, Aditi Sen De
Entangled states are undoubtedly an integral part of various quantum information processing tasks. On the other hand, absolutely separable states which cannot be made entangled und…
Islands and complexity of eternal black hole and radiation subsystems for a doubly holographic model
Aranya Bhattacharya, Arpan Bhattacharyya, Pratik Nandy +1
We study the entanglement islands and subsystem volume complexity corresponding to the left/ right entanglement of a conformal defect in -dimensions in Randall-Sundrum (RS) bran…
Reparametrization mode Ward Identities and chaos in higher-pt. correlators in CFT
Arnab Kundu, Ayan K. Patra, Rohan R. Poojary
Recently introduced reparametrization mode operators in CFTs have been shown to govern stress tensor interactions the shadow operator formalism and seem to govern the effecti…