Experimental demonstration of decoherence suppression via quantum measurement reversal

Abstract

Taming decoherence is essential in realizing quantum computation and quantum communication. Here we experimentally demonstrate that decoherence due to amplitude damping can be suppressed by exploiting quantum measurement reversal in which a weak measurement and the reversing measurement are introduced before and after the decoherence channel, respectively. We have also investigated the trade-off relation between the degree of decoherence suppression and the channel transmittance.

References in corpus (9)

• Decoherence Free Subspaces for Quantum Computation
• Dynamical Decoupling of Open Quantum Systems
• Undoing a weak quantum measurement of a solid-state qubit
• Uncollapsing of a quantum state in a superconducting phase qubit
• Decoherence suppression by uncollapsing
• Scaling laws for the decay of multiqubit entanglement
• Reversing the Weak Quantum Measurement for a Photonic Qubit
• High fidelity quantum gates via dynamical decoupling
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