72 citations · 125 across the 3 of their papers we have counts for
6 papers · 1 filter
High-dimensional Frequency-Encoded Quantum Information Processing with Passive Photonics and Time-Resolving Detection
Chaohan Cui, Kaushik P. Seshadreesan, Saikat Guha +1
In this Letter, we propose a new approach to process high-dimensional quantum information encoded in a photon frequency domain. In contrast to previous approaches based on nonlinea…
Continuous-variable entanglement distillation over a pure loss channel with multiple quantum scissors
Kaushik P. Seshadreesan, Hari Krovi, Saikat Guha
Entanglement distillation is a key primitive for distributing high-quality entanglement between remote locations. Probabilistic noiseless linear amplification based on the quantum…
Binary Homodyne Detection for Observing Quadrature Squeezing in Satellite Links
Christian R. Müller, Kaushik P. Seshadreesan, Christian Peuntinger +1
Optical satellite links open up new prospects for realizing quantum physical experiments over unprecedented length scales. We analyze and affirm the feasibility of detecting quantu…
Continuous-variable quantum repeater based on quantum scissors and mode multiplexing
Kaushik P. Seshadreesan, Hari Krovi, Saikat Guha
Quantum repeaters are indispensable for high-rate, long-distance quantum communications. The vision of a future quantum internet strongly hinges on realizing quantum repeaters in p…
Fundamental precision limit of a Mach-Zehnder interferometric sensor when one of the inputs is the vacuum
Masahiro Takeoka, Kaushik P. Seshadreesan, Chenglong You +2
In the lore of quantum metrology, one often hears (or reads) the following no-go theorem: If you put vacuum into one input port of a balanced Mach-Zehnder Interferometer, then no m…
Rényi generalizations of quantum information measures
Mario Berta, Kaushik P. Seshadreesan, Mark M. Wilde
Quantum information measures such as the entropy and the mutual information find applications in physics, e.g., as correlation measures. Generalizing such measures based on the Rén…