Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Nirman Ganguly"'
Publikováno v:
Quanta, Vol 12, Iss 1, Pp 1-21 (2023)
Violation of Bell's inequality has been the mainspring for secure key generation in an entanglement assisted Quantum Key Distribution (QKD) protocol. Various contributions have relied on the violation of Bell inequalities to build an appropriate QKD
Externí odkaz:
https://doaj.org/article/75e48c5d2c924305a963a1918a005c13
Autor:
Tamal Guha, Bihalan Bhattacharya, Debarshi Das, Some Sankar Bhattacharya, Amit Mukherjee, Arup Roy, Kaushiki Mukherjee, Nirman Ganguly, Archan S. Majumdar
Publikováno v:
Quanta, Vol 8, Iss 1, Pp 57-67 (2019)
Environmental interactions are ubiquitous in practical instances of any quantum information processing protocol. The interaction results in depletion of various quantum resources and even complete loss in numerous situations. Nonlocality, which is on
Externí odkaz:
https://doaj.org/article/ec230c9b678741ae9dfbf6c5b0aa7225
Publikováno v:
Quantum, Vol 6, p 641 (2022)
Negative quantum conditional entropy states are key ingredients for information theoretic tasks such as superdense coding, state merging and one-way entanglement distillation. In this work, we ask: how does one detect if a channel is useful in prepar
Externí odkaz:
https://doaj.org/article/0d6adbf670cf48559f9a21d4178756bf
Autor:
Manik Banik, Some Sankar Bhattacharya, Nirman Ganguly, Tamal Guha, Amit Mukherjee, Ashutosh Rai, Arup Roy
Publikováno v:
Quantum, Vol 3, p 185 (2019)
Entanglement is of paramount importance in quantum information theory. Its supremacy over classical correlations has been demonstrated in a numerous information theoretic protocols. Here we study possible adequacy of quantum entanglement in Bayesian
Externí odkaz:
https://doaj.org/article/dbe1acb054c04fafbd7cdeac728d4cf8
Autor:
Komal Kumar, Nirman Ganguly
Quantum steering is an asymmetric correlation which occupies a place between entanglement and Bell nonlocality. In the paradigmatic scenario involving the protagonists Alice and Bob, the entangled state shared between them, is said to be steerable fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ed853b0c120b2f8049522398955ce59
Publikováno v:
Pramana. 95
It is known that beyond $2 \otimes 2$ and $2 \otimes 3$ dimensional quantum systems, Peres-Hordecki criterion is no longer sufficient as an entanglement detection criterion as there are entangled states with both positive and negative partial transpo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdb71ab0550ae10a3cf071c3fc62bcda
https://doi.org/10.1007/s12043-021-02098-w
https://doi.org/10.1007/s12043-021-02098-w
Violation of Bell's inequality has been the mainspring for secure key generation in an entanglement assisted Quantum Key Distribution(QKD) protocol. Various contributions have relied on the violation of appropriate Bell inequalities to build an appro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5ad3b5219d41ad194491a87ceef55d9
Quantum states that possess negative conditional von Neumann entropy provide quantum advantage in several information-theoretic protocols including superdense coding, state merging, distributed private randomness distillation and one-way entanglement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7380a440014203622559fa40d594b462
Publikováno v:
Physical Review A. 100
Quantum mechanical properties like entanglement, discord and coherence act as fundamental resources in various quantum information processing tasks. Consequently, generating more resources from a few, typically termed as broadcasting is a task of utm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19a63ad92909b7a06759c9bf07d3c2ad
https://doi.org/10.1103/physreva.100.042319
https://doi.org/10.1103/physreva.100.042319
Autor:
Samyadeb Bhattacharya, Indranil Chakrabarty, Rounak Mundra, Suchetana Goswami, Bihalan Bhattacharya, A. S. Majumdar, Nirman Ganguly
Publikováno v:
Journal of Physics Communications. 5:065008
The problem of bound entanglement detection is a challenging aspect of quantum information theory for higher dimensional systems. Here, we propose an indecomposable positive map for two-qutrit systems, which is shown to generate a class of positive p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e322d145d4cadbe3ed0361c9395e2df6
https://doi.org/10.1088/2399-6528/ac0b01
https://doi.org/10.1088/2399-6528/ac0b01