Publications

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2017

Faithful conversion of propagating quantum information to mechanical motion

A.P. Reed, K.H. Mayer, J.D. Teufel, L.D. Burkhart, W. Pfaff, M. Reagor, L. Sletten, X. Ma, R.J. Schoelkopf, E. Knill, K.W. Lehnert, Nature Physics, (2017).

Breaking Lorentz Reciprocity with Frequency Conversion and Delay

E.I. Rosenthal, B.J. Chapman, A.P. Higginbotham, J. Kerckhoff, K.W. Lehnert, Phys. Rev. Lett. 119, 147703 (2017).

Widely Tunable On-Chip Microwave Circulator for Superconducting Quantum Circuits

B.J. Chapman, E.I. Rosenthal, J. Kerckhoff, B.A. Moores, L.R. Vale, J.A.B. Mates, G.C. Hilton, K. Lalumière, A. Blais, K.W. Lehnert, Phys. Rev. X 7, 041043 (2017).
Publication Highlights

First Results from a Microwave Cavity Axion Search at 24 micro-eV

B.M. Brubaker, L. Zhong, Y.V. Gurevich, S.B. Cahn, S.K. Lamoreaux, M. Simanovskaia, J.R. Root, S.M. Lewis, A. Kenany, K.M. Backes, I. Urdinaran, N.M. Rapidis, T.M. Shokair, K.A. van Bibber, D.A. Palken, M. Malnou, W.F. Kindel, M.A. Anil, K.W. Lehnert, G. Carosi, Phys. Rev. Lett. 118, 061302 (2017).
Publication Highlights

Featured in Physics 

Editors' suggestion

Improving Broadband Displacement Detection with Quantum Correlations

N.S. Kampel, R.W. Peterson, R. Fischer, P.L. Yu, K. Cicak, R.W. Simmonds, K.W. Lehnert, C.A. Regal, Phys. Rev. X 7, 021008 (2017).
Publication Highlights

Design and operational experience of a microwave cavity axion detector for the 20 - 100 micro-eV range

A. Kenany, M.A. Anil, K.M. Backes, B.M. Brubaker, S.B. Cahn, G. Carosi, Y.V. Gurevich, W.F. Kindel, S.K. Lamoreaux, K.W. Lehnert, S.M. Lewis, M. Malnou, D.A. Palken, N.M. Rapidis, J.R. Root, M. Simanovskaia, T.M. Shokair, I. Urdinaran, K.A. van Bibber, L. Zhong, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 854, 11 - 24 (2017).

Single-sideband modulator for frequency domain multiplexing of superconducting qubit readout

B.J. Chapman, E.I. Rosenthal, J. Kerckhoff, L.R. Vale, G.C. Hilton, K.W. Lehnert, Applied Physics Letters 110, 162601 (2017).

Reconfigurable re-entrant cavity for wireless coupling to an electro-optomechanical device

T. Menke, P.S. Burns, A.P. Higginbotham, N.S. Kampel, R.W. Peterson, K. Cicak, R.W. Simmonds, C.A. Regal, K.W. Lehnert, Review of Scientific Instruments 88, 094701 (2017).

2016

Generation and efficient measurement of single photons from fixed-frequency superconducting qubits

W.F. Kindel, M.D. Schroer, K.W. Lehnert, Phys. Rev. A 93, 033817 (2016).

Closing a quantum feedback loop inside a cryostat: Autonomous state preparation and long-time memory of a superconducting qubit

C.Kraglund Andersen, J. Kerckhoff, K.W. Lehnert, B.J. Chapman, K. Mølmer, Phys. Rev. A 93, 012346 (2016).
Publication Highlights

Editors' suggestion

Proposal to Test Bell's Inequality in Electromechanics

S.G. Hofer, K.W. Lehnert, K. Hammerer, Phys. Rev. Lett. 116, 070406 (2016).

Laser Cooling of a Micromechanical Membrane to the Quantum Backaction Limit

R.W. Peterson, T.P. Purdy, N.S. Kampel, R.W. Andrews, P.L. Yu, K.W. Lehnert, C.A. Regal, Phys. Rev. Lett. 116, 063601 (2016).
Publication Highlights

Editors' suggestion

General purpose multiplexing device for cryogenic microwave systems

B.J. Chapman, B.A. Moores, E.I. Rosenthal, J. Kerckhoff, K.W. Lehnert, Applied Physics Letters 108, (2016).

Photon Efficient Electro-Optic Conversion via a Micromechanical Oscillator

K.W. Lehnert, C.A. Regal, R.W. Peterson, N.S. Kampel, P.S. Burns, A.P. Higginbotham, Conference on Lasers and Electro-Optics, (2016).

2015

On-Chip Superconducting Microwave Circulator from Synthetic Rotation

J. Kerckhoff, K. Lalumière, B.J. Chapman, A. Blais, K.W. Lehnert, Phys. Rev. Applied 4, 034002 (2015).

Generating and verifying entangled itinerant microwave fields with efficient and independent measurements

H.S. Ku, W.F. Kindel, F. Mallet, S. Glancy, K.D. Irwin, G.C. Hilton, L.R. Vale, K.W. Lehnert, Phys. Rev. A 91, 042305 (2015).

Quantum-enabled temporal and spectral mode conversion of microwave signals

R.W. Andrews, A.P. Reed, K. Cicak, J.D. Teufel, K.W. Lehnert, Nature Communications 6, (2015).

Connecting microwave and optical frequencies with a vibrational degree of freedom

R.W. Andrews, R.W. Peterson, T.P. Purdy, K. Cicak, R.W. Simmonds, C.A. Regal, K.W. Lehnert, SPIE 9343, Laser Resonators, Microresonators, and Beam Control XVII 9343, 934309 (2015).

2014

Future directions in the microwave cavity search for dark matter axions

T.M. Shokair, J. Root, K.A. van Bibber, B. Brubaker, Y.V. Gurevich, S.B. Cahn, S.K. Lamoreaux, M.A. Anil, K.W. Lehnert, B.K. Mitchell, A. Reed, G. Carosi, International Journal of Modern Physics A 29, 1443004 (2014).

Measuring a Topological Transition in an Artificial Spin-1/2 System

D. Schroer, H. Kolodrubetz, F. Kindel, M. Sandberg, J. Gao, R. Vissers, P. Pappas, A. Polkovnikov, K.W. Lehnert, Physical Review Letters 113, 050402 (2014).
Publication Highlights

Editors' suggestion

Bidirectional and efficient conversion between microwave and optical light

R.W. Andrews, R.W. Peterson, T.P. Purdy, K. Cicak, R.W. Simmonds, C.A. Regal, K.W. Lehnert, Nature Physics 10, 321–326 (2014).
Publication Highlights

2013

Deterministic entanglement of superconducting qubits by parity measurement and feedback

D. Ristè, M. Dukalski, C.A. Watson, G. de Lange, M.J. Tiggelman, Y.M. Blanter, K.W. Lehnert, R.N. Schouten, L. DiCarlo, Nature 502, 350 - 354 (2013).

Entangling Mechanical Motion with Microwave Fields

T.A. Palomaki, J.D. Teufel, R.W. Simmonds, K.W. Lehnert, Science 342, 710-713 (2013).
Publication Highlights

Analysis of single-photon and linear amplifier detectors for microwave cavity dark matter axion searches

S.K. Lamoreaux, K.A. van Bibber, K.W. Lehnert, G. Carosi, Physical Review D 88, 035020 (2013).

Tunable Coupling to a Mechanical Oscillator Circuit Using a Coherent Feedback Network

J. Kerckhoff, R.W. Anderson, H.S. Ku, W.F. Kindel, K. Cicak, R.W. Simmonds, K.W. Lehnert, Physical Review X 3, 021013 (2013).

Millisecond charge-parity fluctuations and induced decoherence in a superconducting transmon qubit

D. Ristè, C.C. Bultink, M.J. Tiggelman, R.N. Schouten, K.W. Lehnert, L. DiCarlo, Nature Communications 4, 1913 (2013).

Mechanical resonators for storage and transfer of electrical and optical quantum states

S.A. McGee, D. Meiser, C.A. Regal, K.W. Lehnert, M.J. Holland, Physical Review A 87, 053818 (2013).

Coherent state transfer between itinerant microwave fields and a mechanical oscillator

T.A. Palomaki, J.W. Harlow, J.D. Teufel, R.W. Simmonds, K.W. Lehnert, Nature 495, 210 - 214 (2013).

2012

Feedback Control of a Solid-State Qubit Using High-Fidelity Projective Measurement

D. Ristè, C.C. Bultink, K.W. Lehnert, L. DiCarlo, Physical Review Letters 109, 240502 (2012).

Superconducting Microwave Multivibrator Produced by Coherent Feedback

J. Kerckhoff, K.W. Lehnert, Physical Review Letters 109, 153602 (2012).

Initialization by Measurement of a Superconducting Quantum Bit Circuit

D. Ristè, J. van Leeuwen, H.S. Ku, K.W. Lehnert, L. DiCarlo, Physical Review Letters 109, 050507 (2012).

Flux-Ramp Modulation for SQUID Multiplexing

J.A.B. Mates, K.D. Irwin, L.R. Vale, G.C. Hilton, J. Gao, K.W. Lehnert, Journal of Low Temperature Physics 167, 707-712 (2012).

2011

Sideband cooling of micromechanical motion to the quantum ground state

J.D. Teufel, T. Donner, D. Li, J.W. Harlow, M.S. Allman, K. Cicak, A.J. Sirois, J.D. Whittaker, K.W. Lehnert, R.W. Simmonds, Nature 475, 359–363 (2011).

Quantum State Tomography of an Itinerant Squeezed Microwave Field

F. Mallet, M.A. Castellanos-Beltran, H.S. Ku, S. Glancy, E. Knill, K.D. Irwin, G.C. Hilton, L.R. Vale, K.W. Lehnert, Physical Review Letters 106, 220502 (2011).

Design and Testing of Superconducting Microwave Passive Components for Quantum Information Processing

H.S. Ku, F. Mallet, L.R. Vale, K.D. Irwin, S.E. Russek, G.C. Hilton, K.W. Lehnert, IEEE Transactions on Applied Superconductivity 21, 452 - 455 (2011).

From cavity electromechanics to cavity optomechanics

C.A. Regal, K.W. Lehnert, Journal of Physics: Conference Series 264, 012025 (2011).

Strongly quadrature-dependent noise in superconducting microresonators measured at the vacuum-noise limit

J. Gao, L.R. Vale, J.A.B. Mates, D.R. Schmidt, G.C. Hilton, K.D. Irwin, F. Mallet, M.A. Castellanos-Beltran, K.W. Lehnert, J. Zmuidzinas, H.G. Leduc, Applied Physics Letters 98, 232508 (2011).

Non-contact and all-electrical method for monitoring the motion of semiconducting nanowires

S.W. Hoch, J.R. Montague, V.M. Bright, C.T. Rogers, K.A. Bertness, J.D. Teufel, K.W. Lehnert, Applied Physics Letters 99, 053101 (2011).

2009

Nanomechanical motion measured with an imprecision below that at the standard quantum limit

J.D. Teufel, T. Donner, M.A. Castellanos-Beltran, J.W. Harlow, K.W. Lehnert, Nature Nanotechnology 4, 820 - 823 (2009).

Bandwidth and Dynamic Range of a Widely Tunable Josephson Parametric Amplifier

M.A. Castellanos-Beltran, K.D. Irwin, L.R. Vale, G.C. Hilton, K.W. Lehnert, IEEE Transactions on Applied Superconductivity 19, 944–947 (2009).

2008

Measuring nanomechanical motion with a microwave cavity interferometer

C.A. Regal, J.D. Teufel, K.W. Lehnert, Nature Physics 4, 555 - 560 (2008).

Demonstration of a multiplexer of dissipationless superconducting quantum interference devices

J.A.B. Mates, G.C. Hilton, K.D. Irwin, L.R. Vale, K.W. Lehnert, Applied Physics Letters 92, 023514 (2008).

Amplification and squeezing of quantum noise with a tunable Josephson metamaterial

M.A. Castellanos-Beltran, K.D. Irwin, G.C. Hilton, L.R. Vale, K.W. Lehnert, Nature Physics 4, 929 - 931 (2008).

Dynamical Backaction of Microwave Fields on a Nanomechanical Oscillator

J.D. Teufel, J.W. Harlow, C.A. Regal, K.W. Lehnert, Physical Review Letters 101, (2008).
Publication Highlights

Editors' suggestion

Prospects for cooling nanomechanical motion by coupling to a superconducting microwave resonator

J.D. Teufel, C.A. Regal, K.W. Lehnert, New Journal of Physics 10, 095002 (2008).

2007

Intrinsic Noise Properties of Atomic Point Contact Displacement Detectors

N.E. Flowers-Jacobs, D. Schmidt, K.W. Lehnert, Physical Review Letters 98, (2007).

Widely tunable parametric amplifier based on a superconducting quantum interference device array resonator

M.A. Castellanos-Beltran, K.W. Lehnert, Applied Physics Letters 91, 083509 (2007).

Evaluation of a Microwave SQUID Multiplexer Prototype

K.W. Lehnert, K.D. Irwin, M.A. Castellanos-Beltran, J.A.B. Mates, L.R. Vale, IEEE Transactions on Applied Superconductivity 17, 705 - 709 (2007).

2006

Microwave SQUID multiplexers for low-temperature detectors

K.D. Irwin, J.A. Beall, W.B. Doriese, W.D. Duncan, G.C. Hilton, J.A.B. Mates, C.D. Reintsema, D.R. Schmidt, J.N. Ullom, L.R. Vale, B.L. Zink, K.W. Lehnert, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 559, 802 - 804 (2006).

Normal metal–insulator–superconductor junction technology for bolometers

D.R. Schmidt, W.D. Duncan, K.D. Irwin, K.W. Lehnert, N.A. Miller, J.N. Ullom, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 559, 516 - 518 (2006).

2005

Single-electron transistor backaction on the single-electron box

B. Turek, K.W. Lehnert, A.A. Clerk, D. Gunnarsson, K. Bladh, P. Delsing, R.J. Schoelkopf, Physical Review B 71, (2005).

A superconductor–insulator–normal metal bolometer with microwave readout suitable for large-format arrays

D.R. Schmidt, K.W. Lehnert, A.M. Clark, W.D. Duncan, K.D. Irwin, N. Miller, J.N. Ullom, Applied Physics Letters 86, 053505 (2005).

2004

Noise performance of the radio-frequency single-electron transistor

L. Roschier, P. Hakonen, K. Bladh, P. Delsing, K.W. Lehnert, L. Spietz, R.J. Schoelkopf, Journal of Applied Physics 95, 1274 (2004).

Noise performance of the radio-frequency single-electron transistor

R.J. Schoelkopf, L. Spietz, K.W. Lehnert, L. Roschier, P. Hakonen, K. Bladh, P. Delsing, Journal of Applied Physics 95, 1274 (2004).

Microwave SQUID multiplexer

K.D. Irwin, K.W. Lehnert, Applied Physics Letters 85, 2107 (2004).

2003

Measurement of the Excited-State Lifetime of a Microelectronic Circuit

K.W. Lehnert, K. Bladh, L. Spietz, D. Gunnarsson, D. Schuster, P. Delsing, R.J. Schoelkopf, Physical Review Letters 90, (2003).

Quantum Charge Fluctuations and the Polarizability of the Single-Electron Box

K.W. Lehnert, B. Turek, K. Bladh, L. Spietz, D. Gunnarsson, P. Delsing, R.J. Schoelkopf, Physical Review Letters 91, (2003).

Measurement of the Excited-State Lifetime of a Microelectronic Circuit

K.W. Lehnert, K. Bladh, L. Spietz, D. Gunnarsson, D. Schuster, P. Delsing, R.J. Schoelkopf, Physical Review Letters 90, (2003).

Primary Electronic Thermometry Using the Shot Noise of a Tunnel Junction

L. Spietz, K.W. Lehnert, I. Siddiqi, R.J. Schoelkopf, Science 300, 1929 - 1932 (2003).

Noise and measurement backaction in superconducting circuits: qubits as spectrometers of quantum noise

R.J. Schoelkopf, A.A. Clerk, S.M. Girvin, K.W. Lehnert, M.H. Devoret, SPIE Proceedings: First International Symposium on Fluctuations and Noise and Information in Nanoelectronics, Sensors, and Standards, (2003).

2002

Density-dependent critical currents in quantum-well-coupled weak links

T.A. Eckhause, K.W. Lehnert, J.S. Correa, R.J. Jorstad, E.G. Gwinn, M. Thomas, Applied Physics Letters 81, 3203 (2002).

A high-performance cryogenic amplifier based on a radio-frequency single electron transistor

K. Segall, K.W. Lehnert, T.R. Stevenson, R.J. Schoelkopf, P. Wahlgren, A. Aassime, P. Delsing, Applied Physics Letters 81, 4859 (2002).