title: Quantum-enabled temporal and spectral mode conversion of microwave signals.
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.
authors.affiliation: JILA, University of Colorado and NIST, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: R W
authors.initials: RW
authors.lastname: Andrews
authors.affiliation: JILA, University of Colorado and NIST, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: A P
authors.initials: AP
authors.lastname: Reed
authors.affiliation: National Institute of Standards and Technology (NIST), Boulder, Colorado 80305, USA.
authors.forename: K
authors.initials: K
authors.lastname: Cicak
authors.affiliation: National Institute of Standards and Technology (NIST), Boulder, Colorado 80305, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Teufel
authors.affiliation: JILA, University of Colorado and NIST, Boulder, Colorado 80309, USA.|Department of Physics, University of Colorado, Boulder, Colorado 80309, USA.|National Institute of Standards and Technology (NIST), Boulder, Colorado 80305, USA.
authors.forename: K W
authors.initials: KW
authors.lastname: Lehnert