159 citations · 458 across the 14 of their papers we have counts for
8 papers · 1 filter
Training iterated protocols for distillation of GHZ states with variational quantum algorithms
Áron Rozgonyi, Gábor Széchenyi, Orsolya Kálmán +1
We present optimized distillation schemes for preparing Greenberger-Horne-Zeilinger (GHZ) states. Our approach relies on training variational quantum circuits with white noise affe…
Experimental orthogonalization of highly overlapping quantum states with single photons
Gaoyan Zhu, Orsolya Kalman, Kunkun Wang +6
We experimentally realize a nonlinear quantum protocol on single-photon qubits with linear optical elements and appropriate measurements. The quantum nonlinearity is induced by pos…
Phase Transition in Iterated Quantum Protocols for Noisy Inputs
Martin Malachov, Igor Jex, Orsolya Kálmán +1
Quantum information processing exploits all the features quantum mechanics offers. Among them there is the possibility to induce nonlinear maps on a quantum system by involving two…
Quantum state identification of qutrits via a nonlinear protocol
P. V. Pyshkin, A. Gábris, O. Kálmán +2
We propose a probabilistic quantum protocol to realize a nonlinear transformation of qutrit states, which by iterative applications on ensembles can be used to distinguish two type…
Sensitivity to initial noise in measurement-induced nonlinear quantum dynamics
Orsolya Kálmán, Tamás Kiss, Igor Jex
We consider a special iterated quantum protocol with measurement-induced nonlinearity for qubits, where all pure initial states on the Bloch sphere can be considered chaotic. The d…
Magnetic noise spectrum measurement by an atom laser in gravity
O. Kálmán, Z. Darázs, F. Brennecke +1
Bose-Einstein condensates of ultracold atoms can be used to sense fluctuations of the magnetic field by means of transitions into untrapped hyperfine states. It has been shown rece…