468 citations · 1.7k across the 32 of their papers we have counts for
4 papers · 2 filters
Realizable receivers for discriminating arbitrary coherent-state waveforms and multi-copy quantum states near the quantum limit
Ranjith Nair, Saikat Guha, Si-Hui Tan
Coherent states of light, and methods for distinguishing between them, are central to all applications of laser light. We obtain the ultimate quantum limit on the error probability…
Symmetric M-ary phase discrimination using quantum-optical probe states
Ranjith Nair, Brent J. Yen, Saikat Guha +2
We present a theoretical study of minimum error probability discrimination, using quantum- optical probe states, of M optical phase shifts situated symmetrically on the unit circle…
Fundamental quantum limits in optical metrology from rate-distortion theory
Ranjith Nair
We derive fundamental lower bounds on the performance of optical metrology and communication systems in a Bayesian framework. The derivation uses classical rate-distortion theory i…
Fundamental quantum limits to waveform detection
Mankei Tsang, Ranjith Nair
Ever since the inception of gravitational-wave detectors, limits imposed by quantum mechanics to the detection of time-varying signals have been a subject of intense research and d…