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Unconditional preparation of squeezed vacuum from Rabi interactions
Jacob Hastrup, Kimin Park, Radim Filip +1
Squeezed states of harmonic oscillators are a central resource for continuous-variable quantum sensing, computation and communication. Here we propose a method for the generation o…
Deterministic multi-mode gates on a scalable photonic quantum computing platform
Mikkel V. Larsen, Xueshi Guo, Casper R. Breum +2
Quantum computing can be realized with numerous different hardware platforms and computational protocols. A highly promising approach to foster scalability is to apply a photonic p…
Cubic phase gates are not suitable for non-Clifford operations on GKP states
Jacob Hastrup, Mikkel V. Larsen, Jonas S. Neergaard-Nielsen +2
With the Gottesman-Kitaev-Preskill (GKP) encoding, Clifford gates and error correction can be carried out using simple Gaussian operations. Still, non-Clifford gates, required for…
Quantum receiver for phase-shift keying at the single photon level
Jasminder S. Sidhu, Shuro Izumi, Jonas S. Neergaard-Nielsen +2
Quantum enhanced receivers are endowed with resources to achieve higher sensitivities than conventional technologies. For application in optical communications, they provide improv…
Adaptive generalized measurement for unambiguous state discrimination of quaternary phase-shift-keying coherent states
Shuro Izumi, Jonas S. Neergaard-Nielsen, Ulrik L. Andersen
Generalized quantum measurements identifying non-orthogonal states without ambiguity often play an indispensable role in various quantum applications. For such unambiguous state di…
Limit of Gaussian operations and measurements for Gaussian state discrimination, and its application to state comparison
David E. Roberson, Shuro Izumi, Wojciech Roga +3
We determine the optimal method of discriminating and comparing quantum states from a certain class of multimode Gaussian states and their mixtures when arbitrary global Gaussian o…