Quantum-enabled temporal and spectral mode conversion of microwave signals

R. W. Andrews (), A. P. Reed, K. Cicak, J. D. Teufel and K. W. Lehnert
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R. W. Andrews: JILA, University of Colorado and NIST
A. P. Reed: JILA, University of Colorado and NIST
K. Cicak: National Institute of Standards and Technology (NIST)
J. D. Teufel: National Institute of Standards and Technology (NIST)
K. W. Lehnert: JILA, University of Colorado and NIST

Nature Communications, 2015, vol. 6, issue 1, 1-5

Abstract: Abstract Electromagnetic waves are ideal candidates for transmitting information in a quantum network as they can be routed rapidly and efficiently between locations using optical fibres or microwave cables. Yet linking quantum-enabled devices with cables has proved difficult because most cavity or circuit quantum electrodynamics systems used in quantum information processing can only absorb and emit signals with a specific frequency and temporal envelope. Here we show that the temporal and spectral content of microwave-frequency electromagnetic signals can be arbitrarily manipulated with a flexible aluminium drumhead embedded in a microwave circuit. The aluminium drumhead simultaneously forms a mechanical oscillator and a tunable capacitor. This device offers a way to build quantum microwave networks using separate and otherwise mismatched components. Furthermore, it will enable the preparation of non-classical states of motion by capturing non-classical microwave signals prepared by the most coherent circuit quantum electrodynamics systems.

Date: 2015
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DOI: 10.1038/ncomms10021

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