# Seamless High-Q Microwave Cavities for Multimode Circuit Quantum Electrodynamics.

@article{Chakram2021SeamlessHM, title={Seamless High-Q Microwave Cavities for Multimode Circuit Quantum Electrodynamics.}, author={Srivatsan Chakram and Andrew Oriani and Ravi K. Naik and Akash V. Dixit and Kevin He and Ankur Agrawal and Hyeokshin Kwon and David I. Schuster}, journal={Physical review letters}, year={2021}, volume={127 10}, pages={ 107701 } }

Multimode cavity quantum electrodynamics-where a two-level system interacts simultaneously with many cavity modes-provides a versatile framework for quantum information processing and quantum optics. Because of the combination of long coherence times and large interaction strengths, one of the leading experimental platforms for cavity QED involves coupling a superconducting circuit to a 3D microwave cavity. In this work, we realize a 3D multimode circuit QED system with single photon lifetimes…

## 5 Citations

Fast Universal Control of an Oscillator with Weak Dispersive Coupling to a Qubit

- Physics
- 2021

Efficient quantum control of an oscillator is necessary for many bosonic applications including error-corrected computation [1–8], quantumenhanced sensing [9–11], robust quantum communication [12,…

Drive-induced nonlinearities of cavity modes coupled to a transmon ancilla

- Physics
- 2021

High-Q microwave cavity modes coupled to transmon ancillas provide a hardware-efficient platform for quantum computing. Due to their coupling, the cavity modes inherit finite nonlinearity from the…

Non-destructive optical readout of a superconducting qubit

- Physics
- 2021

R. D. Delaney, 2, ∗ M. D. Urmey, 2 S. Mittal, 2 B. M. Brubaker, 2 J. M. Kindem, 2 P. S. Burns, 2 C. A. Regal, 2 and K. W. Lehnert 2, 3 JILA, National Institute of Standards and Technology and the…

Chiral Cavity Quantum Electrodynamics

- Physics
- 2021

John Clai Owens, 2 Margaret G. Panetta, Brendan Saxberg, Gabrielle Roberts, Srivatsan Chakram, Ruichao Ma, Andrei Vrajitoarea, Jonathan Simon, and David Schuster James Franck Institute and Department…

Searching for Dark Matter with a Superconducting Qubit.

- Physics, MedicinePhysical review letters
- 2021

A novel microwave photon counting technique and a new exclusion limit on hidden photon dark matter are reported and a demonstrated noise reduction technique enables future dark matter searches to be sped up by a factor of 1,300.

## References

SHOWING 1-10 OF 29 REFERENCES

Superconducting circuit quantum computing with nanomechanical resonators as storage

- Physics, MathematicsQuantum Science and Technology
- 2018

We analyze the quantum information processing capability of a superconducting transmon circuit used to mediate interactions between quantum information stored in a collection of phononic crystal…

Superconducting metamaterials for waveguide quantum electrodynamics

- Physics, BiologyNature Communications
- 2018

The authors couple a transmon qubit to a superconducting metamaterial with a deep sub-wavelength lattice constant and probe the coherent and dissipative dynamics of the system by measuring the Lamb shift and radiative lifetime of the qubit.

Random access quantum information processors using multimode circuit quantum electrodynamics

- Physics, MedicineNature Communications
- 2017

A random access superconducting quantum information processor is implemented, demonstrating universal operations on a nine-qubit memory, with a Josephson junction transmon circuit serving as the central processor.

Deterministic bidirectional communication and remote entanglement generation between superconducting qubits

- Computer Sciencenpj Quantum Information
- 2019

This work proposes and experimentally demonstrates an efficient scheme for bidirectional and deterministic photonic communication between two remote superconducting modules, and overcome the various restrictions of quantum communication channels established by other recent approaches in deterministic communication forsuperconducting qubits.

Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

- Physics
- 2004

Under appropriate conditions, superconducting electronic circuits behave quantum mechanically, with properties that can be designed and controlled at will. We have realized an experiment in which a…

Resolving photon number states in a superconducting circuit

- Physics, MedicineNature
- 2007

A circuit QED experiment is reported in the strong dispersive limit, a new regime where a single photon has a large effect on the qubit without ever being absorbed, the basis of a logic bus for a quantum computer.

Entanglement of bosonic modes through an engineered exchange interaction

- Computer Science, MedicineNature
- 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.

Reaching 10 ms single photon lifetimes for superconducting aluminum cavities

- Materials Science, Physics
- 2013

Three-dimensional microwave cavities have recently been combined with superconducting qubits in the circuit quantum electrodynamics architecture. These cavities should have less sensitivity to…

Extending the lifetime of a quantum bit with error correction in superconducting circuits

- Computer Science, MedicineNature
- 2016

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.

Quantum dynamics of an electromagnetic mode that cannot contain N photons

- Physics, MedicineScience
- 2015

Performing a direct Wigner tomography of the field revealed its nonclassical features, including a Schrödinger cat–like state at half period in the evolution, which may enable applications in quantum information and metrology.