11 citations · 15 across the 7 of their papers we have counts for
7 papers · 1 filter
Multi-Time States in Quantum and Operational Probabilistic Theories: An Axiomatic Framework
Kaumudibikash Goswami, Archana Barvar, Manabendra Nath Bera
Quantum states over time were introduced, in part, to extend Bayesian probability to quantum theory and have since found applications across diverse areas, ranging from quantum cau…
Entropic limitations on fixed causal order
Matheus Capela, Kaumudibikash Goswami
Quantum processes can exhibit scenarios beyond a fixed order of events. We propose information inequalities that, when violated, constitute sufficient conditions to certify quantum…
Hamiltonian characterisation of multi-time processes with classical memory
Kaumudibikash Goswami, Abhinash Kumar Roy, Varun Srivastava +4
A central problem in open quantum systems is the characterization of non-Markovian processes, where an environment retains the memory of its interaction with the system. A key dist…
Conditional entropy and information of quantum processes
Siddhartha Das, Kaumudibikash Goswami, Vivek Pandey
What would be a reasonable definition of the conditional entropy of bipartite quantum processes, and what novel insight would it provide? We develop this notion using four informat…
Causal and Non-Causal Revivals of Information: A New Regime of Non-Markovianity in Quantum Stochastic Processes
Francesco Buscemi, Rajeev Gangwar, Kaumudibikash Goswami +5
The study of information revivals, witnessing the violation of certain data-processing inequalities, has provided an important paradigm in the study of non-Markovian quantum stocha…
Maximum and minimum causal effects of physical processes
Giulio Chiribella, Kaumudibikash Goswami
We introduce two quantitative measures of the strength of causal relations in quantum theory and more general physical theories. These two measures, called the maximum and minimum…
Squashed quantum non-Markovianity: a measure of genuine quantum non-Markovianity in states
Rajeev Gangwar, Tanmoy Pandit, Kaumudibikash Goswami +2
Quantum non-Markovianity in tripartite quantum states represents a correlation between systems and when conditioned on the system and is known to have both cl…