154 citations · 222 across the 2 of their papers we have counts for
2 papers
quant-ph2012★ 68 cited
QPSK coherent state discrimination via a hybrid receiver
Christian R. Müller, Mario A. Usuga, Christoffer Wittmann +4
We propose and experimentally demonstrate a near-optimal discrimination scheme for the quadrature phase shift keying protocol (QPSK). We show in theory that the performance of our…
quant-ph2010★ 154 cited
Noise-Powered Probabilistic Concentration of Phase Information
Mario A. Usuga, Christian R. Mueller, Christoffer Wittmann +5
Phase insensitive optical amplification of an unknown quantum state is known to be a fundamentally noisy operation that inevitably adds noise to the amplified state [1 - 5]. Howeve…