160 citations · 750 across the 40 of their papers we have counts for
40 papers
Entanglement battery and entanglement catalyst in local state discrimination problems
Saronath Halder, Aby Philip, Alexander Streltsov
In this work, we study the limitations and advantages of using entanglement battery and entanglement catalyst in local state discrimination problems. We consider both cases of such…
Incompleteness is necessary for activation of nonlocality without entanglement
Atanu Bhunia, Saronath Halder, Preeti Parashar +1
A set of orthogonal product states is said to exhibit "quantum nonlocality without entanglement" if it is locally indistinguishable, i.e. no sequence of local operations and classi…
Entanglement of minimal dimension and a class of local state discrimination problems
Saronath Halder, Suchetana Goswami
In this work, we construct small sets of bipartite orthogonal pure states that cannot be perfectly distinguished by local operations and classical communication (LOCC). We mention…
Protocols for sharing genuine multipartite entanglement by employing copies of biseparable states
Swati Choudhary, Ujjwal Sen, Saronath Halder
Sharing genuine multipartite entanglement by considering collective use of copies of biseparable states, which are entangled across all bipartitions but lack genuine multipartite e…
Paradox-free classical non-causality and unambiguous non-locality without entanglement are equivalent
Hippolyte Dourdent, Kyrylo Simonov, Andreas Leitherer +5
Closed timelike curves (CTCs) challenge our conception of causality by allowing information to loop back into its own past. Any consistent description of such scenarios must avoid…
Classifying locally distinguishable sets: No activation across bipartitions
Atanu Bhunia, Saronath Halder, Ritabrata Sengupta
A set of orthogonal quantum states is said to be locally indistinguishable if they cannot be perfectly distinguished by local operations and classical communication (LOCC). Otherwi…
Local unambiguous unidentifiability, entanglement generation, and Hilbert space splitting
Saronath Halder, Remigiusz Augusiak
We consider collections of mixed states supported on mutually orthogonal subspaces whose rank add up to the total dimension of the underlying Hilbert space. We then ask whether it…
Unconditionally superposition-robust entangled state in all multiparty quantum systems
Swati Choudhary, Ujjwal Sen, Saronath Halder
We investigate the inseparability of states generated by superposition of a multipartite pure entangled state with a product state. In particular, we identify specific multipartite…
Almost device-independent certification of GME states with minimal measurements
Shubhayan Sarkar, Alexandre C. Orthey, Gautam Sharma +2
Device-independent certification of quantum states enables the characterization of states within a device under minimal physical assumptions. A major problem in this regard is to c…
Efficient entanglement-assisted discrimination of a class of many-copy indistinguishable sets
Abhay Srivastav, Saronath Halder
We explore entanglement as a resource to distinguish locally indistinguishable orthogonal quantum states. Specifically, we consider sets which contain states from an unextendible p…
Quantum advantage in a unified scenario and secure detection of resources
Saronath Halder, Alexander Streltsov
Quantum resources may provide advantage over their classical counterparts. We say this as quantum advantage. Here we consider a single communication task to study different approac…
Unextendibility, uncompletability, and many-copy indistinguishable ensembles
Saronath Halder, Alexander Streltsov
In this work, we explore the notions unextendible product basis and uncompletability for operators which remain positive under partial transpose. Then, we analyze their connections…
Self-testing composite measurements and bound entangled state in a single quantum network
Shubhayan Sarkar, Chandan Datta, Saronath Halder +1
Within the quantum networks scenario we introduce a single scheme allowing to certify three different types of composite projective measurements acting on a three-qubit Hilbert spa…
Information locking and its resource efficient extraction
Suchetana Goswami, Saronath Halder
Locally indistinguishable states are useful to distribute information among spatially separated parties such that the information is locked. This implies that the parties are not a…
Identifying the value of a random variable unambiguously: Quantum versus classical approaches
Saronath Halder, Alexander Streltsov, Manik Banik
Quantum resources may provide advantage over their classical counterparts. Theoretically, in certain tasks, this advantage can be very high. In this work, we construct such a task…
To share and not share a singlet: control qubit and nonclassicality in teleportation
Kornikar Sen, Adithi Ajith, Saronath Halder +1
The superposition principle provides us the opportunity to unfold many surprising facts. One such fact leads to the generation of entanglement which may allow one to teleport an un…
Incompatibility of local measurements provide advantage in local quantum state discrimination
Kornikar Sen, Saronath Halder, Ujjwal Sen
The uncertainty principle may be considered as giving rise to the notion of incompatibility of observables. A pack of quantum measurements that cannot be measured simultaneously is…
Conditions for local transformations between sets of quantum states
Somshubhro Bandyopadhyay, Saronath Halder, Ritabrata Sengupta
We study the problem of transforming a set of pure bipartite states into another using deterministic LOCC (local operations and classical communication). Necessary conditions for t…
Separability and entanglement in superpositions of quantum states
Saronath Halder, Ujjwal Sen
It is known that probabilistically mixing an arbitrary pair of pure quantum states, one of which is entangled and the other product, in any bipartite quantum system, one always obt…
Genuine activation of nonlocality: From locally available to locally hidden information
Somshubhro Bandyopadhyay, Saronath Halder
Quantum nonlocality has different manifestations that, in general, are revealed by local measurements of the parts of a composite system. In this paper, we study nonlocality arisin…
Unextendible entangled bases and more nonlocality with less entanglement
Saronath Halder, Ujjwal Sen
We consider a general version of the phenomenon of more nonlocality with less entanglement, within the framework of the unambiguous (i.e., conclusive) quantum state discrimination…
Optimal teleportation fidelity and its deviation in noisy scenarios
Pratapaditya Bej, Saronath Halder, Ritabrata Sengupta
In this work, we study the combined effects of noisy resource state and noisy classical communication on teleportation fidelity and its deviation. Basically, we consider a teleport…
Multi-copy adaptive local discrimination: Strongest possible two-qubit nonlocal bases
Manik Banik, Tamal Guha, Mir Alimuddin +3
Ensembles of composite quantum states can exhibit nonlocal behaviour in the sense that their optimal discrimination may require global operations. Such an ensemble containing N pai…
Quantum entanglement percolation under a realistic restriction
Shashaank Khanna, Saronath Halder, Ujjwal Sen
The problem of establishing Bell and Greenberger-Horne-Zeilinger states between faraway places or distant nodes of a circuit is a difficult and an extremely important one, and a st…