184 citations · 743 across the 16 of their papers we have counts for
16 papers
Surface and Bulk Two-Level System Losses in Lithium Niobate Acoustic Resonators
Rachel G. Gruenke-Freudenstein, Erik Szakiel, Gitanjali P. Multani +7
Lithium niobate (LN) is a promising material for building acoustic resonators used in quantum applications, but its performance is limited by poorly understood material defects cal…
Hardware-efficient quantum error correction via concatenated bosonic qubits
Harald Putterman, Kyungjoo Noh, Connor T. Hann +118
In order to solve problems of practical importance, quantum computers will likely need to incorporate quantum error correction, where a logical qubit is redundantly encoded in many…
Arbitrary electro-optic bandwidth and frequency control in lithium niobate optical resonators
Jason F. Herrmann, Devin J. Dean, Christopher J. Sarabalis +6
In situ tunable photonic filters and memories are important for emerging quantum and classical optics technologies. However, most photonic devices have fixed resonances and bandwid…
Demonstrating a long-coherence dual-rail erasure qubit using tunable transmons
Harry Levine, Arbel Haim, Jimmy S. C. Hung +110
Quantum error correction with erasure qubits promises significant advantages over standard error correction due to favorable thresholds for erasure errors. To realize this advantag…
Surface Modification and Coherence in Lithium Niobate SAW Resonators
Rachel G. Gruenke, Oliver A. Hitchcock, E. Alex Wollack +5
Lithium niobate is a promising material for developing quantum acoustic technologies due to its strong piezoelectric effect and availability in the form of crystalline thin films o…
Strong dispersive coupling between a mechanical resonator and a fluxonium superconducting qubit
Nathan R. A. Lee, Yudan Guo, Agnetta Y. Cleland +10
We demonstrate strong dispersive coupling between a fluxonium superconducting qubit and a 690 megahertz mechanical oscillator, extending the reach of circuit quantum acousto-dynami…
Studying phonon coherence with a quantum sensor
Agnetta Y. Cleland, E. Alex Wollack, Amir H. Safavi-Naeini
In the field of quantum technology, nanomechanical oscillators offer a host of useful properties given their compact size, long lifetimes, and ability to detect force and motion. T…
Quantum state preparation, tomography, and entanglement of mechanical oscillators
E. Alex Wollack, Agnetta Y. Cleland, Rachel G. Gruenke +3
Precisely engineered mechanical oscillators keep time, filter signals, and sense motion, making them an indispensable part of today's technological landscape. These unique capabili…
Loss channels affecting lithium niobate phononic crystal resonators at cryogenic temperature
E. Alex Wollack, Agnetta Y. Cleland, Patricio Arrangoiz-Arriola +6
We investigate the performance of microwave-frequency phononic crystal resonators fabricated on thin-film lithium niobate for integration with superconducting quantum circuits. For…
Cryogenic microwave-to-optical conversion using a triply-resonant lithium niobate on sapphire transducer
Timothy P. McKenna, Jeremy D. Witmer, Rishi N. Patel +6
Quantum networks are likely to have a profound impact on the way we compute and communicate in the future. In order to wire together superconducting quantum processors over kilomet…
A silicon-organic hybrid platform for quantum microwave-to-optical transduction
Jeremy D. Witmer, Timothy P. McKenna, Patricio Arrangoiz-Arriola +6
Low-loss fiber optic links have the potential to connect superconducting quantum processors together over long distances to form large scale quantum networks. A key component of th…
Electric fields for light: Propagation of microwave photons along a synthetic dimension
Nathan R. A. Lee, Marek Pechal, E. Alex Wollack +3
The evenly-spaced modes of an electromagnetic resonator are coupled to each other by appropriate time-modulation, leading to dynamics analogous to those of particles hopping betwee…
Mechanical Purcell Filters for Microwave Quantum Machines
Agnetta Y. Cleland, Marek Pechal, Pieter-Jan C. Stas +2
In circuit quantum electrodynamics, measuring the state of a superconducting qubit introduces a loss channel which can enhance spontaneous emission through the Purcell effect, thus…
Resolving the energy levels of a nanomechanical oscillator
Patricio Arrangoiz-Arriola, E. Alex Wollack, Zhaoyou Wang +5
The coherent states that describe the classical motion of a mechanical oscillator do not have well-defined energy, but are rather quantum superpositions of equally-spaced energy ei…
Quantum dynamics of a few-photon parametric oscillator
Zhaoyou Wang, Marek Pechal, E. Alex Wollack +4
Modulating the frequency of a harmonic oscillator at nearly twice its natural frequency leads to amplification and self-oscillation. Above the oscillation threshold, the field sett…
Coupling a superconducting quantum circuit to a phononic crystal defect cavity
Patricio Arrangoiz-Arriola, E. Alex Wollack, Marek Pechal +3
Connecting nanoscale mechanical resonators to microwave quantum circuits opens new avenues for storing, processing, and transmitting quantum information. In this work, we couple a…