Publications (29)
Merging plasmoids and nanojet-like ejections in a coronal current sheet
Samrat Sen, F. Moreno-Insertis
Forced magnetic reconnection is triggered by external perturbations, which are ubiquitous in the solar corona. This process plays a crucial role in the energy release during solar…
Role of magnetic shear distribution on the formation of eruptive flux ropes
Samrat Sen, Sushree S Nayak, Patrick Antolin
Erupting flux ropes play crucial role in powering a wide range of solar transients, including flares, jets, and coronal mass ejections. These events are driven by the release of st…
Exploring the magnetic and thermal evolution of a coronal jet
Sushree S Nayak, Samrat Sen, Arpit Kumar Shrivastav +2
Coronal jets are the captivating eruptions which are often found in the solar atmosphere, and primarily formed due to magnetic reconnection. Despite their short-lived nature and lo…
Open and closed magnetic configurations of twisted flux tubes
Samrat Sen, A. Mangalam
We construct two classes of magnetohydrostatic (MHS) equilibria for an axisymmetric vertical flux tube spanning from the photosphere to the lower part of the transition region with…
Advantage of Hardy's Nonlocal Correlation in Reverse Zero-Error Channel Coding
Mir Alimuddin, Ananya Chakraborty, Govind Lal Sidhardh +5
Hardy's argument constitutes an elegant proof of quantum nonlocality. In this work, we report an exotic application of Hardy's nonlocal correlations in two-party communication setu…
Extreme-ultraviolet synthesis of nanojet-like ejections due to coalescing flux ropes
Samrat Sen, A. Ramada C. Sukarmadji, D. Nóbrega-Siverio +3
Detection and characterization of small-scale energetic events such as nanoflares and nanojets remain challenging owing to their short lifetimes, small spatial extent, and relative…
Nonlocality-Assisted Enhancement of Error-Free Communication in Noisy Classical Channels
Kunika Agarwal, Sahil Gopalkrishna Naik, Ananya Chakraborty +5
The zero-error capacity of a noisy classical channel quantifies its ability to transmit information with absolute certainty, i.e., without any error. Unlike Shannon's standard chan…
Local state antimarking : Nonlocality without entanglement
Biswadeep Chatterjee, Tathagata Gupta, Pratik Ghosal +1
A set of quantum states is said to be antidistinguishable if, upon being given a randomly chosen state, it is possible to identify a state that the system was definitively not prep…
Classical analogue of quantum superdense coding and communication advantage of a single quantum system
Ram Krishna Patra, Sahil Gopalkrishna Naik, Edwin Peter Lobo +5
We analyze utility of communication channels in absence of any short of quantum or classical correlation shared between the sender and the receiver. To this aim, we propose a class…
Asymptotic Birkhoff-Violation in Operational Theories: Thermodynamic Implications and Information Processing
Ananya Chakraborty, Sahil Gopalkrishna Naik, Samrat Sen +4
In accordance with the entropy principle of thermodynamics, under spontaneous evolutions, physical systems always evolve towards states with equal or greater randomness. But, where…
Timelike correlations and quantum tensor product structure
Samrat Sen, Edwin Peter Lobo, Ram Krishna Patra +4
The state space structure for a composite quantum system is postulated among several mathematically consistent possibilities that are compatible with local quantum description. For…
Certifying beyond quantumness of locally quantum no-signalling theories through quantum input Bell test
Edwin Peter Lobo, Sahil Gopalkrishna Naik, Samrat Sen +3
Physical theories constrained with local quantum structure and satisfying the no-signalling principle can allow beyond-quantum global states. In a standard Bell experiment, correla…
From eruption to post-flare rain: a 2.5D MHD model
Samrat Sen, Avijeet Prasad, Valeriia Liakh +1
The formation of the MFRs in the pre-flare stage, and how this leads to coronal rain in a post-eruption magnetic loop is not fully understood. We explore the formation, and eruptio…
Conclusive Local State Marking: More Nonlocality With No Entanglement
Samrat Sen
Nonlocality exhibited by ensembles of composite quantum states, wherein local operations and classical communication (LOCC) yield suboptimal discrimination probabilities compared t…
Thermally enhanced tearing in solar current sheets: explosive reconnection with plasmoid-trapped condensations
Samrat Sen, Rony Keppens
In flare-relevant current sheets, tearing instability may trigger explosive reconnection and plasmoid formation. We explore how the thermal and tearing modes reinforce each other i…
3D coupled tearing-thermal evolution in solar current sheets
Samrat Sen, Jack Jenkins, Rony Keppens
Combined tearing-thermal evolution plays an important role in the disruption of current sheets, and formation of cool condensations within the solar atmosphere. However, this has r…
Quantum state exclusion with many copies
Debanjan Roy, Tathagata Gupta, Pratik Ghosal +2
Quantum state exclusion is the task of identifying at least one state from a known set that was not used in the preparation of a quantum system. A set of quantum states is said to…
Harnessing Causal Indefiniteness for Accessing Locally Inaccessible Data
Sahil Gopalkrishna Naik, Samrat Sen, Ram Krishna Patra +4
Recent studies suggest that physical theories can exhibit indefinite causal structures, where the causal order of events is fundamentally undefined yet logically consistent. Beyond…
Overcoming Traditional No-Go Theorems: Quantum Advantage in Multiple Access Channels
Ananya Chakraborty, Sahil Gopalkrishna Naik, Edwin Peter Lobo +5
Extension of point-to-point communication model to the realm of multi-node configurations finds a plethora of applications in internet and telecommunication networks. Here, we esta…
Principle of information causality rationalizes quantum composition
Ram Krishna Patra, Sahil Gopalkrishna Naik, Edwin Peter Lobo +4
Principle of information causality, proposed as a generalization of no signaling principle, has efficiently been applied to outcast beyond quantum correlations as unphysical. In th…
Distilling Nonlocality in Quantum Correlations
Sahil Gopalkrishna Naik, Govind Lal Sidhardh, Samrat Sen +3
Nonlocality, as established by seminal Bell's theorem, is considered to be the most striking feature of correlations present in space like separated events. Its practical applicati…
Composition of multipartite quantum systems: perspective from time-like paradigm
Sahil Gopalkrishna Naik, Edwin Peter Lobo, Samrat Sen +5
Figuring out the physical rationale behind natural selection of quantum theory is one of the most acclaimed quests in quantum foundational research. This pursuit has inspired sever…
Geometric invariants for a class of submodules of analytic Hilbert modules via the sheaf model
Shibananda Biswas, Gadadhar Misra, Samrat Sen
Let be a bounded connected open set and be an analytic Hilbert module, i.e., the Hilbert space possesse…
The coupled tearing-thermal instability in coronal current sheets from the linear to the non-linear stage
Jordi De Jonghe, Samrat Sen
In the solar corona, magnetically sheared structures are unstable to both tearing and thermal instabilities in a coupled fashion. However, how the choice of linear perturbation mod…
Scalable & Noise-Robust Communication Advantage of Multipartite Quantum Entanglement
Ananya Chakraborty, Ram Krishna Patra, Kunika Agarwal +4
Distributed computing, involving multiple servers collaborating on designated computations, faces a critical challenge in optimizing inter-server communication -- an issue central…
Local Quantum State Marking
Samrat Sen, Edwin Peter Lobo, Sahil Gopalkrishna Naik +8
We propose the task of local state marking (LSM), where some multipartite quantum states chosen randomly from a known set of states are distributed among spatially separated partie…
Entanglement of flower states
Samrat Sen, Ludovico Lami
The mysterious nature of entanglement, one of the most prominent exquisitely quantum phenomena, is reflected in its intricate operational structure, with a hierarchy of classes of…
How transverse MHD wave-driven turbulence influences the density filling factor in the solar corona?
Samrat Sen, Vaibhav Pant
It is well established that the transverse MHD waves are ubiquitous in the solar corona. One of the possible mechanisms for heating both open (e.g. coronal holes) and closed (e.g.…
Mutually Unbiased Balanced Functions & Generalized Random Access Codes
Vaisakh M, Ram krishna Patra, Mukta Janpandit +3
Quantum resources and protocols are known to outperform their classical counterparts in variety of communication and information processing tasks. Random Access Codes (RACs) are on…