Publications by Brian Vlastakis

Hardware-efficient autonomous quantum memory protection.

Physical review letters 111 (2013) 120501-

Z Leghtas, G Kirchmair, B Vlastakis, RJ Schoelkopf, MH Devoret, M Mirrahimi

We propose to encode a quantum bit of information in a superposition of coherent states of an oscillator, with four different phases. Our encoding in a single cavity mode, together with a protection protocol, significantly reduces the error rate due to photon loss. This protection is ensured by an efficient quantum error correction scheme employing the nonlinearity provided by a single physical qubit coupled to the cavity. We describe in detail how to implement these operations in a circuit quantum electrodynamics system. This proposal directly addresses the task of building a hardware-efficient quantum memory and can lead to important shortcuts in quantum computing architectures.

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