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Daniel Slichter (Fed)


I am a staff physicist in the Ion Storage Group at NIST Boulder. My research focuses on quantum information experiments with trapped atomic ions, with an emphasis on developing new paradigms for scalable trapped ion quantum computing. Recent projects include performing high-fidelity two-ion entangling operations with microwave and rf fields instead of lasers, achieving entangled state fidelities rivaling those from best laser-based gates; using strong unitary squeezing of ion motion to enhance ion-ion interactions and to perform electric field sensing below the standard quantum limit; and integrating superconducting photon detectors into microfabricated ion traps (made in the world-class NIST Boulder Microfabrication Facility, in collaboration with the NIST Faint Photonics Group) as an initial step in building a fully chip-integrated trapped ion quantum processor. In my previous research life, I worked in superconducting quantum information, where I performed the first continuous high-fidelity measurement of a superconducting qubit, and studied quantum feedback, measurement backaction, and near-quantum-limited parametric amplification.

The research in our group is carried out by an international team of staff scientists, postdocs, and graduate students. We are always looking for bright, motivated people to join us. Please contact me to discuss opportunities.

A complete up-to-date listing of my publications is available on Google Scholar or the arXiv.  You can also find PDFs via the Ion Storage Group Publications page.

Selected Recent Publications

  • R. Srinivas, S. C. Burd, H. M. Knaack, R. T. Sutherland, A. Kwiatkowski, S. Glancy, E. Knill, D. J. Wineland, D. Leibfried, A. C. Wilson, D. T. C. Allcock, and D. H. Slichter. “High-fidelity laser-free universal control of trapped-ion qubits.” Nature 597, 209 (2021). PDF Journal
  • S. C. Burd, R. Srinivas, H. M. Knaack, W. Ge, A. C. Wilson, D. J. Wineland, D. Leibfried, J. J. Bollinger, D. T. C. Allcock, and D. H. Slichter.  “Quantum amplification of boson-mediated interactions.” Nature Physics 17, 898 (2021). PDF Journal
  • S. L. Todaro, V. B. Verma, K. C. McCormick, D. T. C. Allcock, R. P. Mirin, D. J. Wineland, S. W. Nam, A. C. Wilson, D. Leibfried, and D. H. Slichter. “State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector.” Physical Review Letters 126, 010501 (2021). PDF Journal
  • J. C. Bardin, D. H. Slichter, and D. J. Reilly.  “Microwaves in Quantum Computing.” IEEE Journal of Microwaves 1, 403 (2021). PDF Journal
  • S. C. Burd, R. Srinivas, J. J. Bollinger, A. C. Wilson, D. J. Wineland, D. Leibfried, D. H. Slichter, and D. T. C. Allcock, “Quantum amplification of mechanical oscillator motion.” Science 364, 1163 (2019). PDF Journal
  • R. Srinivas, S. C. Burd, R. T. Sutherland, A. C. Wilson, D. J. Wineland, D. Leibfried, D. T. C. Allcock, and D. H. Slichter, “Trapped-ion spin-motion coupling with microwaves and a near-motional oscillating magnetic field gradient.” Physical Review Letters 122, 163201 (2019). PDF Journal
  • R. T. Sutherland, R. Srinivas, S. C. Burd, D. Leibfried, A. C. Wilson, D. J. Wineland, D. T. C. Allcock, D. H. Slichter, and S. B. Libby, “Versatile laser-free trapped-ion entangling gates.”  New Journal of Physics 21, 033033 (2019). PDF Journal



VECSEL systems for quantum information processing with trapped beryllium ions

Shaun C. Burd, Jussi-Pekka Penttinen, Panyu Hou, Hannah Knaack, Sanna Ranta, Mika Maki, Emmi Kantola, Mircea Guina, Daniel Slichter, Dietrich Leibfried, Andrew C. Wilson
We demonstrate two systems based on vertical-external-cavity surface-emitting lasers (VECSELs) for producing ultraviolet laser light at wavelengths of 235 and

Coherently coupled mechanical oscillators in the quantum regime

Panyu Hou, Jenny Wu, Stephen Erickson, Daniel Cole, Giorgio Zarantonello, Adam Brandt, Andrew C. Wilson, Daniel Slichter, Dietrich Leibfried
Coupled harmonic oscillators are ubiquitous in physics and play a prominent role in quantum science. They are a cornerstone of quantum mechanics and quantum

High-fidelity indirect readout of trapped-ion hyperfine qubits

Stephen Erickson, Jenny Wu, Panyu Hou, Daniel Cole, Shawn Geller, Alexander Kwiatkowski, Scott Glancy, Emanuel Knill, Daniel Slichter, Andrew C. Wilson, Dietrich Leibfried
We propose and demonstrate a protocol for high-fidelity indirect readout of trapped ion hyperfine qubits, where the state of a 9Be+ qubit ion is mapped to a
Created July 30, 2019, Updated May 23, 2023