923 citations · 1.3k across the 4 of their papers we have counts for
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Oracle separations of hybrid quantum-classical circuits
Atul Singh Arora, Alexandru Gheorghiu, Uttam Singh
An important theoretical problem in the study of quantum computation, that is also practically relevant in the context of near-term quantum devices, is to understand the computatio…
Partial order on passive states and Hoffman majorization in quantum thermodynamics
Uttam Singh, Siddhartha Das, Nicolas J. Cerf
Passive states, i.e., those states from which no work can be extracted via unitary operations, play an important role in the foundations and applications of quantum thermodynamics.…
Quantum thermodynamics in a multipartite setting: A resource theory of local Gaussian work extraction for multimode bosonic systems
Uttam Singh, Michael G. Jabbour, Zacharie Van Herstraeten +1
Quantum thermodynamics can be cast as a resource theory by considering free access to a heat bath, thereby viewing the Gibbs state at a fixed temperature as a free state and hence…
Max- relative entropy of coherence: an operational coherence measure
Kaifeng Bu, Uttam Singh, Shao-Ming Fei +2
The operational characterization of quantum coherence is the corner stone in the development of resource theory of coherence. We introduce a new coherence quantifier based on max-r…
Average distance of random pure states from maximally entangled and coherent states
Kaifeng Bu, Uttam Singh, Lin Zhang +1
It is well known that random bipartite pure states are typically maximally entangled within an arbitrarily small error. Showing that the marginals of random bipartite pure states a…
Maximally coherent mixed states: Complementarity between maximal coherence and mixedness
Uttam Singh, Manabendra Nath Bera, Himadri Shekhar Dhar +1
Quantum coherence is a key element in topical research on quantum resource theories and a primary facilitator for design and implementation of quantum technologies. However, the re…