# Programmable interference between two microwave quantum memories

@article{Gao2018ProgrammableIB, title={Programmable interference between two microwave quantum memories}, author={Yvonne Y Gao and Brian J. Lester and Yaxing Zhang and Changcheng Wang and Serge Rosenblum and Luigi Frunzio and Liang Jiang and Steven M. Girvin and Robert J. Schoelkopf}, journal={arXiv: Quantum Physics}, year={2018} }

Interference experiments provide a simple yet powerful tool to unravel fundamental features of quantum physics. Here we engineer an RF-driven, time-dependent bilinear coupling that can be tuned to implement a robust 50:50 beamsplitter between stationary states stored in two superconducting cavities in a three-dimensional architecture. With this, we realize high contrast Hong-Ou- Mandel (HOM) interference between two spectrally-detuned stationary modes. We demonstrate that this coupling provides… Expand

#### 39 Citations

Entanglement of bosonic modes through an engineered exchange interaction

- Computer Science, Medicine
- Nature
- 2019

An efficient implementation of the exponential-SWAP operation is developed and its experimental realization between bosonic qubits stored in two superconducting microwave cavities is presented, providing a valuable building block for universal quantum computation using bosonic modes. Expand

Simple preparation of Bell and Greenberger-Horne-Zeilinger states using ultrastrong-coupling circuit QED

- Physics
- 2018

The ability to entangle quantum systems is crucial for many applications in quantum technology, including quantum communication and quantum computing. Here, we propose a simple and versatile setup… Expand

Engineering bilinear mode coupling in circuit QED: Theory and experiment

- Physics
- 2019

Photonic states of superconducting microwave cavities controlled by transmon ancillas provide a platform for encoding and manipulating quantum information. A key challenge in scaling up the platform… Expand

Hong-Ou-Mandel interference of polarization qubits stored in independent room-temperature quantum memories

- Mathematics
- 2018

First generation quantum repeater networks require independent quantum memories capable of storing and retrieving indistinguishable photons to perform quantum-interference-mediated high-repetition… Expand

Efficient Multiphoton Sampling of Molecular Vibronic Spectra on a Superconducting Bosonic Processor

- Physics
- 2019

The efficient simulation of quantum systems is a primary motivating factor for developing controllable quantum machines. For addressing systems with underlying bosonic structure, it is advantageous… Expand

Error-detected state transfer and entanglement in a superconducting quantum network

- Physics, Computer Science
- 2020

Communication and entanglement in a superconducting network with a microwave-actuated beamsplitter transformation between two bosonic qubits, which are housed in separate modules and joined by a demountable coaxial bus resonator is demonstrated. Expand

Coherent spin-wave processor of stored optical pulses

- Physics, Computer Science
- 2018

The operation of a coherent optical memory is demonstrated being able to store optical pulses in the form of collective spin-wave excitations in a two-dimensional wavevector space and performing on-demand release to realize arbitrary optical computation. Expand

Experimental Fock-state bunching capability of non-ideal single-photon states

- Physics
- 2020

Advanced quantum technologies, as well as fundamental tests of quantum physics, crucially require the interference of multiple single photons in linear-optics circuits. This interference can result… Expand

Quantum interference of multi-photon at beam splitter with application in measurement-device-independent quantum key distribution

- Physics
- 2019

Despite the relative simplicity of the traditional Hong–Ou–Mandel (HOM) interferometer setup, it is of fundamental interest in various quantumoptics applications and quantum information technologies.… Expand

Hardware-Efficient Quantum Random Access Memory with Hybrid Quantum Acoustic Systems.

- Computer Science, Medicine
- Physical review letters
- 2019

It is shown how engineered phonon-phonon couplings can be used to access data in superposition according to the state of designated address modes-implementing a QRAM on a single chip. Expand

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