130 citations · 327 across the 7 of their papers we have counts for
7 papers
Demonstration of quantum-limited discrimination of multi-copy pure versus mixed states
Arunkumar Jagannathan, Olivia Brasher, Michael Grace +3
We demonstrate an optical receiver that achieves the quantum Chernoff bound for discriminating coherent states from thermal states in the multi-copy scenario. In contrast, we find…
Quantum-limited discrimination of laser light and thermal light
Jonathan L. Habif, Arunkumar Jagannathan, Samuel Gartenstein +2
Understanding the fundamental sensitivity limit of an optical sensor requires a full quantum mechanical description of the sensing task. In this work, we calculate the fundamental…
Covert Optical Communication
Boulat A. Bash, Andrei H. Gheorghe, Monika Patel +4
Encryption prevents unauthorized decoding, but does not ensure stealth---a security demand that a mere presence of a message be undetectable. We characterize the ultimate limit of…
Optical codeword demodulation with error rates below standard quantum limit using a conditional nulling receiver
Jian Chen, Jonathan L. Habif, Zachary Dutton +2
The quantum states of two laser pulses---coherent states---are never mutually orthogonal, making perfect discrimination impossible. Even so, coherent states can achieve the ultimat…
PPM demodulation: On approaching fundamental limits of optical communications
Saikat Guha, Jonathan L. Habif, Masahiro Takeoka
We consider the problem of demodulating M-ary optical PPM (pulse-position modulation) waveforms, and propose a structured receiver whose mean probability of symbol error is smaller…
Decoherence of the flux-based superconducting qubit in an integrated circuit environment
Jonathan L. Habif, Mark F. Bocko
Superconducting, flux-based qubits are promising candidates for the construction of a large scale quantum computer. We present an explicit quantum mechanical calculation of the coh…
A "Tipping Pulse" Scheme for rf-SQUID Qubits
Xingxiang Zhou, Jonathan L. Habif, Mark F. Bocko +1
We introduce a technique to control the macroscopic quantum state of an rf SQUID qubit. We propose to employ a stream of single flux quantum (SFQ) pulses magnetically coupled to th…