Hardware-efficient autonomous quantum memory protection.
Zaki Leghtas,Zaki Leghtas,Gerhard Kirchmair,Gerhard Kirchmair,Gerhard Kirchmair,Brian Vlastakis,Robert Schoelkopf,Michel Devoret,Mazyar Mirrahimi,Mazyar Mirrahimi +9 more
TLDR
This work encoding in a single cavity mode, together with a protection protocol, significantly reduces the error rate due to photon loss and describes in detail how to implement these operations in a circuit quantum electrodynamics system.Abstract:
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.read more
Citations
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Quantum error correction for quantum memories
TL;DR: In this article, the relation between error correction and the concept of two-dimensional topological order in many-body physics is reviewed. And the authors show that certain multiqubit entangled states are well protected from common forms of decoherence as the quantum information is hidden in inherently nonlocal degrees of freedom.
Journal ArticleDOI
Microwave photonics with superconducting quantum circuits
TL;DR: In the past 20 years, impressive progress has been made both experimentally and theoretically in superconducting quantum circuits, which provide a platform for manipulating microwave photons as mentioned in this paper, and many higher-order effects, unusual and less familiar in traditional cavity quantum electrodynamics with natural atoms, have been experimentally observed.
Journal ArticleDOI
Extending the lifetime of a quantum bit with error correction in superconducting circuits
Nissim Ofek,Andrei Petrenko,Reinier Heeres,Philip Reinhold,Zaki Leghtas,Zaki Leghtas,Brian Vlastakis,Yehan Liu,Luigi Frunzio,Steven Girvin,Liang Jiang,Mazyar Mirrahimi,Mazyar Mirrahimi,Michel Devoret,Robert Schoelkopf +14 more
TL;DR: A QEC system that reaches the break-even point by suppressing the natural errors due to energy loss for a qubit logically encoded in superpositions of Schrödinger-cat states of a superconducting resonator is demonstrated.
Journal ArticleDOI
Microwave photonics with superconducting quantum circuits
TL;DR: In the past 20 years, impressive progress has been made both experimentally and theoretically in superconducting quantum circuits, which provide a platform for manipulating microwave photons as mentioned in this paper, and many higher-order effects, unusual and less familiar in traditional cavity quantum electrodynamics with natural atoms, have been experimentally observed.
References
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