9 citations · 45 across the 20 of their papers we have counts for
22 papers
Quantum hypothesis testing of non-mixed-unitarity: A multifaceted hierarchy of quantum channel discrimination
Pratik Ghosal, Pritam Halder, Ayan Patra +2
Given multiple uses of an unknown quantum channel, we determine whether it is a specified non-mixed-unitary channel or belongs to the set of mixed-unitary channels. Formulating thi…
Private communication from Pauli channels with no privacy
Uthirakalyani G, Pritam Halder, David Elkouss
A channel capacity quantifies the communication capability of a noisy physical process. In contrast to communication channels in the classical world, quantum theory makes this capa…
Quantum time-flip beats adaptive metrology: Asymptotic benefit, activation, and unsimulability
Gaurang Agrawal, Pritam Halder, Aditi Sen De
In quantum metrology, adaptive and causal-superposition strategies are proven to be beneficial over parallel schemes for a finite number of channel uses, but their advantages disap…
Entanglement-enhanced fluctuation-free daemonic ergotropy with random measurements
Saptarshi Roy, Pritam Halder, Tamal Guha +1
Optimized daemonic ergotropy can make entanglement thermodynamically dispensable in measurement-assisted work extraction: for a fixed system marginal, quantum-classical states can…
Efficient formulation of quantum network under amplitude damping noise: Highlighting benefits over its Pauli-twirled counterpart
Sudipta Mondal, Pritam Halder, Stav Haldar +1
At the heart of building a large-scale quantum internet lies the challenge of establishing long-distance entanglement using quantum repeaters, which mitigate direct transmission lo…
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…
Measurement-based quantum computation with variable-range interacting systems
Debkanta Ghosh, Keshav Das Agarwal, Pritam Halder +1
We demonstrate that weighted graph states (WGS) generated via variable-range interacting Ising spin systems where the interaction strength decays with distance as a power law, char…
Classical capacities under physical constraints: More capacity with less entanglement
Sudipta Mondal, Pritam Halder, Saptarshi Roy +1
Current advancements in communication equipment demand the investigation of classical information transfer over quantum channels, by encompassing realistic scenarios in finite dime…
Indefinite Time Directed Quantum Metrology
Gaurang Agrawal, Pritam Halder, Aditi Sen De
We explore the performance of the metrology scheme by employing a quantum time flip during encoding, a specific case of processes with indefinite time direction, which we refer to…
More nonlocality with less incompatibility in higher dimensions: Bell vs prepare-measure scenarios
Sudipta Mondal, Pritam Halder, Saptarshi Roy +1
Connecting incompatibility in measurements with the violation of local realism is one of the fundamental avenues of research. For two qubits, any incompatible pair of projective me…
Recovery of resources through sequential noisy measurements
Sudipta Mondal, Pritam Halder, Amit Kumar Pal +1
Noisy unsharp measurements incorporated in quantum information protocols may hinder performance, reducing the quantum advantage. However, we show that, unlike projective measuremen…
Deciding factor for detecting a particle within a subspace via dark and bright states
Aashay Pandharpatte, Pritam Halder, Aditi Sen De
In a measurement-induced continuous-time quantum walk, we address the problem of detecting a particle in a subspace, instead of a fixed position. In this configuration, we develop…
Operational Ergotropy: suboptimality of the geodesic drive
Pritam Halder, Srijon Ghosh, Saptarshi Roy +1
We put forth a notion of optimality for extracting ergotropic work, derived from an energy constraint governing the necessary dynamics for work extraction in a quantum system. With…
Revealing effects of local dimension on variable-range interacting model by connecting Lieb-Robinson bounds and multipartite entanglement
Keshav Das Agarwal, Debkanta Ghosh, Pritam Halder +1
A spin- variable-range interacting Ising model may display qualitatively different behaviors depending on the fall-off rate of the interactions, as already seen in equilibrium s…
Duality between imperfect resources and measurements for propagating entanglement in networks
Sudipta Mondal, Pritam Halder, Aditi Sen De
We propose a measurement-based entanglement propagation strategy for networks in which all nodes except two are initially occupied by a suitably chosen single-qubit system and the…
Entanglement of weighted graphs uncovers transitions in variable-range interacting models
Debkanta Ghosh, Keshav Das Agarwal, Pritam Halder +1
The cluster state acquired by evolving the nearest-neighbor (NN) Ising model from a completely separable state is the resource for measurement-based quantum computation. Instead of…
Hybrid nonlocality via atom photon interactions with and without impurities
Pritam Halder, Ratul Banerjee, Saptarshi Roy +1
To obtain Bell statistics from hybrid systems composed of finite- and infinite-dimensional systems, we propose a hybrid measurement scheme, in which the continuous mode is measured…
Manifestation of Rank-Tuned Weak Measurements Towards Featured State Generation
Pritam Halder, Ratul Banerjee, Shiladitya Mal +1
We propose that an unsharp measurement-based process to generate genuine multipartite entanglement from an entangled initial state with a fewer number of qubits can be classified i…
Sequential Reattempt of Telecloning
Sudipta Das, Pritam Halder, Ratul Banerjee +1
The task of a telecloning protocol is to send an arbitrary qubit possessed by a sender to multiple receivers. Instead of performing Bell measurement at the sender's node, if one ap…
Limits of network nonlocality probed by time-like separated observers
Pritam Halder, Ratul Banerjee, Shiladitya Mal +1
In an entanglement swapping scenario, if two sources sharing entangled states between three parties are independent, local correlations lead to a different kind of inequalities tha…
Circulating Genuine Multiparty Entanglement in Quantum Network
Pritam Halder, Ratul Banerjee, Srijon Ghosh +2
We propose a deterministic scheme of generating genuine multiparty entangled states in quantum networks of arbitrary size having various geometric structures -- we refer to it as e…
Measurement-based Multipartite Entanglement Inflation
Pritam Halder, Shiladitya Mal, Aditi Sen De
Generating entanglement between more parties is one of the central tasks and challenges in the backdrop of building quantum technologies. Here we propose a measurement-based protoc…