Recent Publications

Long-range two-hybrid-qubit gates mediated by a microwave cavity with red sidebands,” J. C. Abadillo-Uriel, Cameron King, S. N. Coppersmith, and Mark Friesen, arXiv:2106.10555. Preprint [arXiv]
Strong electron-electron interactions in Si/SiGe quantum dots,” H. Ekmel Ercan, S. N. Coppersmith, and Mark Friesen, arXiv:2105.10645. Preprint [arXiv]
Radio frequency reflectometry in silicon-based quantum dots,” Y.-Y. Liu, S. G. J. Philips, L.A. Orona, N. Samkharadze, T. McJunkin, E. R. MacQuarrie, M. A. Eriksson, L. M. K. Vandersypen, and A. Yacoby, appearing in Phys. Rev. Applied [arXiv]
Charge-noise resilience of two-electron quantum dots in Si/SiGe heterostructures,” H. Ekmel Ercan, Mark Friesen, and S. N. Coppersmith, arXiv:2105.10643. Preprint [arXiv]
Valley splittings in Si/SiGe quantum dots with a germanium spike in the silicon well,” Thomas McJunkin, E. R. MacQuarrie, Leah Tom, S. F. Neyens, J. P. Dodson, Brandur Thorgrimsson, J. Corrigan, H. Ekmel Ercan, D. E. Savage, M. G. Lagally, Robert Joynt, S. N. Coppersmith, Mark Friesen, and M. A. Eriksson, arXiv:2104.08232. Preprint [arXiv]
Ray-Based Framework for State Identification in Quantum Dot Devices,” Justyna P. Zwolak, T. McJunkin, Sandesh S. Kalantre, S. F. Neyens, E. R. MacQuarrie, M. A. Eriksson, and Jacob M. Taylor, PRX Quantum 2, 020335 (2021) [arXiv | Journal]
Dual isotope NMR gyro,” TG Walker, SS Sorensen, and ZS Yardim, Optical and Quantum Sensing and Precision Metrology 11700, 117002O (2021) [GScholar]
Speedup of the Quantum Adiabatic Algorithm using Delocalization  Catalysis, Chenfeng Cao, Jian Xue, Nic Shannon, Robert Joynt,arXiv:2007.11212,Phys. Rev. Research 3, 013092 (2021)    [arXiv]
How valley-orbit states in silicon quantum dots probe quantum well interfaces,” J. P. Dodson, H. Ekmel Ercan, J. Corrigan, Merritt Losert, Nathan Holman, Thomas McJunkin, L. F. Edge, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, arXiv:2103.14702. Preprint [arXiv]
Theory of hole-spin qubits in strained germanium quantum dots,” L. A. Terrazos, E. Marcellina, Zhanning Wang, S. N. Coppersmith, Mark Friesen, A. R. Hamilton, Xuedong Hu, Belita Koiller, A. L. Saraiva, Dimitrie Culcer, and Rodrigo B. Capaz, Phys. Rev. B 103, 125201 (2021) [Journal]
Adjoint-optimized nanoscale light extractor for nitrogen-vacancy centers in diamond,” R. A. Wambold, Zhaoning Yu, Yuzhe Xiao, Benjamin Bachman, G. R. Jaffe, S. Kolkowitz, J. T. Choy, M. A. Eriksson, Robert J. Hamers, and Mikhail Kats, Nanophotonics 10, 393 (2021) [arXiv | Journal]
Coherent control and spectroscopy of a semiconductor quantum dot Wigner molecule,” J. Corrigan, J. P. Dodson, H. Ekmel Ercan, J. C. Abadillo-Uriel, Brandur Thorgrimsson, T. J. Knapp, Nathan Holman, Thomas McJunkin, Samuel F. Neyens, E. R. MacQuarrie, Ryan H. Foote, L. F. Edge, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, arXiv:2009.13572. Preprint [arXiv]
Charge qubit in a triple quantum dot with tunable coherence,” B. Kratochwil, J. V. Koski, A. J. Landig, P. Scarlino, J. C. Abadillo-Uriel, C. Reichl, S. N. Coppersmith, W. Wegscheider, Mark Friesen, A. Wallraff, T. Ihn, and K. Ensslin, Phys. Rev. Research 3, 013171 (2021) [Journal]
Fabrication process and failure analysis for robust quantum dots in silicon,” J. P. Dodson, Nathan Holman, B. Thorgrimsson, S. F. Neyens, E. R. MacQuarrie, T. McJunkin, R. H. Foote, L. F. Edge, S. N. Coppersmith, and M. A. Eriksson, Nanotech. 31, 505001 (2020) [arXiv | Journal]
Progress toward a capacitively mediated CNOT between two charge qubits in Si/SiGe,” E. R. MacQuarrie, Samuel F. Neyens, J. P. Dodson, J. Corrigan, Brandur Thorgrimsson, Nathan Holman, M. Palma, L. F. Edge, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, npj Quantum Inform. 6, 81 (2020) [Journal]
All-optical intrinsic atomic gradiometer with sub-20 fT/cm/√ Hz sensitivity in a 22 µT earth-scale magnetic field,” AR Perry, MD Bulatowicz, M Larsen, TG Walker, and R Wyllie, Optics Express 28 (24), 36696-36705, 1 (2020) [GScholar]
Progress Towards a Capacitively Mediated CNOT Between Two Charge Qubits in Si/SiGe,” E. R. MacQuarrie, S. F. Neyens, J. P. Dodson, J. Corrigan, B. Thorgrimsson, Nathan Holman, M. Palma, L. F. Edge, Mark Friesen, S. N. Coppersmith, and M. A. Eriksson, npj Quant. Inf. 6, 81 (2020) [arXiv | Journal]
Microwave engineering for semiconductor quantum dots in a cQED architecture,” Nathan Holman, J. P. Dodson, L. F. Edge, S. N. Coppersmith, Mark Friesen, R. McDermott, and M. A. Eriksson, Appl. Phys. Lett. 117, 083502 (2020) [Journal]
Impacts of random filling on spin squeezing via Rydberg dressing in optical clocks,” J. Van Damme, X. Zheng, M. Saffman, M.G. Vavilov, S. Kolkowitz, under review at PRX Quantum, pre-print at [arXiv]
Atomic interferometer system,” MS Larsen, TG Walker, and JM Brown, US Patent App. 16/866,931 (2020) [GScholar]
Effect of Quantum Hall Edge Strips on Valley Splitting in Silicon Quantum Wells,” Brian Paquelet Wuetz, Merritt P. Losert, Alberto Tosato, Mario Lodari, Peter L. Bavdaz, Lucas Stehouwer, Payam Amin, James S. Clarke, Susan N. Coppersmith, Amir Sammak, Menno Veldhorst, Mark Friesen, and Giordano Scappucci, Phys. Rev. Lett. 125, 186801 (2020) [Journal]
Pulsed-beam atomic magnetometer system,” MD Bulatowicz, TG Walker, and MS Larsen, US Patent 10,823,790, 2 (2020) [GScholar]
Three-Omega Thermal-Conductivity Measurements with Curved Heater Geometries,” G. R. Jaffe, Keenan J. Smith, Victor W. Brar, M. G. Lagally, and M. A. Eriksson, Appl. Phys. Lett. 117, 073102 (2020) [arXiv | Journal]
Spatial Noise Correlations in a Si/SiGe Two-Qubit Device from Bell State Coherences,” Jelmer M. Boter, Xiao Xue, Tobias S. Krähenmann, Thomas F. Watson, Vickram N. Premakumar, Daniel R. Ward, Donald E. Savage, Max G. Lagally, Mark Friesen, Susan N. Coppersmith, Mark A. Eriksson, Robert Joynt, and Lieven M. K. Vandersypen, Phys. Rev. B 101, 235133 (2020) [Journal]
State-dependent phonon-limited spin relaxation of nitrogen-vacancy centers,” M.C. Cambria, A. Gardill, Y. Li, A. Norambuena, J.R. Maze, S. Kolkowitz, under review at Physical Review Letters, pre-print at [arXiv]
M. Saffman,” I. I. Beterov, A. Dalal, E. J. Paez, and B. C. Sanders, Symmetric Rydberg controlled-Z gates with adiabatic pulses Phys. Rev. A 101 062309 (2020)
Linear and Nonlinear Crystal Optics Using the Magnetic Field of Light,” Z. N. Buckholtz and D. D. Yavuz Phys. Rev. A 101, 02831 (2020)“ [PDF]
Strong photon coupling to the quadrupole moment of an electron in a solid-state qubit,” J. V. Koski, A. J. Landig, M. Russ, J. C. Abadillo-Uriel, P. Scarlino, B. Kratochwil, C. Reichl, W. Wegscheider, Guido Burkard, Mark Friesen, S. N. Coppersmith, A. Wallraff, K. Ensslin, and T. Ihn, Nature Physics 16, 642 (2020) [Journal]
The effect of external electric fields on silicon with superconducting gallium nano-precipitates,” B. Thorgrimsson, T. McJunkin, E. R. MacQuarrie, S. N. Coppersmith, and M. A. Eriksson, J. Appl. Phys. 127, 215102 (2020) [arXiv | Journal]
Repetitive Quantum Nondemolition Measurement and Soft Decoding of a Silicon Spin Qubit,” Xiao Xue, Benjamin D’Anjou, Thomas F. Watson, Daniel R. Ward, Donald E. Savage, Max G. Lagally, Mark Friesen, Susan N. Coppersmith, Mark A. Eriksson, William A. Coish, and Lieven M. K. Vandersypen, Phys. Rev. X 10, 021006 (2020) [Journal]
Atomic clock system,” MS Larsen, and TG Walker, US Patent 10,725,431 (2020) [GScholar]
N. Lauk,” N. Sinclair, S. Barzanjeh, J. P. Covey, M. Saffman, M. Spiropulu, and C. Simon, Perspectives on quantum transduction, Qu. Sci. Tech. 5, 020501 (2020)
Lifting of spin blockade by charged impurities in Si-MOS double quantum dot devices,” Cameron King, Joshua S. Schoenfield, M. J. Calderón, Belita Koiller, André Saraiva, Xuedong Hu, HongWen Jiang, Mark Friesen, and S. N. Coppersmith, Phys. Rev. B 101, 155411 (2020) [Journal]
Auto-tuning of double dot devices in situ with machine learning,” Justyna P. Zwolak, T. McJunkin, Sandesh S. Kalantre, J. P. Dodson, E. R. MacQuarrie, D. E. Savage, M. G. Lagally, S. N. Coppersmith, M. A. Eriksson, and Jacob M. Taylor, Phys. Rev. Applied 13, 034075 (2020) [arXiv | Journal]
Majorana bound states in nanowire-superconductor hybrid systems in periodic magnetic fields,” Viktoriia Kornich, Maxim G. Vavilov, Mark Friesen, M. A. Eriksson, and S. N. Coppersmith, Phys. Rev. B 101, 125414 (2020) [Journal]
Fast relaxation on qutrit transitions of nitrogen-vacancy Centers in nanodiamonds,” A. Gardill, M.C. Cambria, and S. Kolkowitz, Physical Review Applied 13, 034010 (2020) [Journal]
M. Kwon,” P. Yang, P. Huft, C. Young, M. Ebert, and M. Saffman, Generation of 14.0 W of single-frequency light at 770 nm by intracavity frequency doubling Opt. Lett.  45, 339 (2020)
A Synchronous Spin-Exchange Optically Pumped NMR-Gyroscope,” SS Sorensen, DA Thrasher, and TG Walker, Applied Sciences 10 (20), 7099, 2 (2020) [GScholar]
High-fidelity entangling gates for quantum-dot hybrid qubits based on exchange interactions,” Yuan-Chi Yang, S. N. Coppersmith, and Mark Friesen, Phys. Rev. A 101, 012338 (2020) [Journal]
Dual-Species Synchronous Spin-Exchange Optical Pumping,” DA Thrasher, SS Sorensen, and TG Walker, arXiv preprint arXiv:1912.04991, 2 (2019) [arXiv | GScholar]
Measurements of Capacitive Coupling Within a Quadruple-Quantum-Dot Array,” Samuel F. Neyens, E.R. MacQuarrie, J.P. Dodson, J. Corrigan, Nathan Holman, Brandur Thorgrimsson, M. Palma, Thomas McJunkin, L.F. Edge, Mark Friesen, S.N. Coppersmith, and M.A. Eriksson, Phys. Rev. Appl. 12, 064049 (2019) [Journal]
T. M. Graham,” M. Kwon, B. Grinkemeyer, Z. Marra, X. Jiang, M. T. Lichtman, Y. Sun, M. Ebert, and M. Saffman, Rydberg-Mediated Entanglement in a Two-Dimensional Neutral Atom Qubit Array Phys. Rev. Lett. 123, 230501 (2019)
Characterizing atomic magnetic gradiometers for fetal magnetocardiography,” IA Sulai, ZJ DeLand, MD Bulatowicz, CP Wahl, RT Wakai, and TG Walker, Review of Scientific Instruments 90 (8), 085003, 14 (2019) [GScholar]
High-fidelity single-qubit gates in a strongly driven quantum-dot hybrid qubit with 1/f charge noise,” Yuan-Chi Yang, S. N. Coppersmith, and Mark Friesen, Phys. Rev. A 100, 022337 (2019) [Journal]
Enhancing the dipolar coupling of a S-T0 qubit with a transverse sweet spot,” J. C. Abadillo-Uriel, M. A. Eriksson, S. N. Coppersmith, and Mark Friesen, Nature Comm. 10, 5641 (2019) [arXiv | Journal]