Searched for: author:"Bultink, C.C."
(1 - 7 of 7)
document
Sagastizabal, R.E. (author), Bonet Monroig, X. (author), Singh, Malay (author), Rol, M.A. (author), Bultink, C.C. (author), Fu, X. (author), Ostroukh, V. (author), Muthusubramanian, N. (author), Bruno, A. (author), Beekman, M.C. (author), Haider, S.N. (author), O'Brien, T.E. (author), di Carlo, L. (author)
Variational quantum eigensolvers offer a small-scale testbed to demonstrate the performance of error mitigation techniques with low experimental overhead. We present successful error mitigation by applying the recently proposed symmetry verification technique to the experimental estimation of the ground-state energy and ground state of the...
journal article 2019
document
Rol, M.A. (author), Battistel, F. (author), Malinowski, F.K. (author), Bultink, C.C. (author), Tarasinski, B.M. (author), Vollmer, R. (author), Haider, S.N. (author), Muthusubramanian, N. (author), Bruno, A. (author), Terhal, B.M. (author), di Carlo, L. (author)
Conditional-phase (cz) gates in transmons can be realized by flux pulsing computational states towards resonance with noncomputational ones. We present a 40 ns cz gate based on a bipolar flux pulse suppressing leakage (0.1%) by interference and approaching the speed limit set by exchange coupling. This pulse harnesses a built-in echo to...
journal article 2019
document
Bultink, C.C. (author), Tarasinski, B.M. (author), Haandbæk, N. (author), Poletto, S. (author), Haider, S.N. (author), Michalak, D.J. (author), Bruno, A. (author), di Carlo, L. (author)
We present and demonstrate a general three-step method for extracting the quantum efficiency of dispersive qubit readout in circuit QED. We use active depletion of post-measurement photons and optimal integration weight functions on two quadratures to maximize the signal-to-noise ratio of the non-steady-state homodyne measurement. We derive...
journal article 2018
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Fu, X. (author), Rol, M.A. (author), Bultink, C.C. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), García Almudever, C. (author), di Carlo, L. (author), Bertels, K.L.M. (author)
This article proposes a quantum microarchitecture, QuMA. Flexible programmability of a quantum processor is achieved by multilevel instructions decoding, abstracting analog control into digital control, and translating instruction execution with non-deterministic timing into event trigger with precise timing. QuMA is validated by several...
journal article 2018
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Fu, X. (author), Rol, M.A. (author), Bultink, C.C. (author), van Someren, J. (author), Khammassi, N. (author), Ashraf, I. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Vlothuizen, W.J. (author), Schouten, R.N. (author), García Almudever, C. (author), di Carlo, L. (author), Bertels, K.L.M. (author)
Quantum computers promise to solve certain problems that are intractable for classical computers, such as factoring large numbers and simulating quantum systems. To date, research in quantum computer engineering has focused primarily at opposite ends of the required system stack: devising high-level programming languages and compilers to...
conference paper 2017
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Rol, M.A. (author), Bultink, C.C. (author), O'Brien, T.E. (author), De Jong, S. R. (author), Theis, L. S. (author), Fu, X. (author), Lüthi, F. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Bruno, A. (author), Deurloo, D. (author), Schouten, R.N. (author), Wilhelm, FK (author), di Carlo, L. (author)
We present a tuneup protocol for qubit gates with tenfold speedup over traditional methods reliant on qubit initialization by energy relaxation. This speedup is achieved by constructing a cost function for Nelder-Mead optimization from real-time correlation of nondemolition measurements interleaving gate operations without pause. Applying the...
journal article 2017
document
Bultink, C.C. (author), Rol, M.A. (author), O'Brien, T.E. (author), Fu, X. (author), Dikken, B.C.S. (author), Dickel, C. (author), Vermeulen, R.F.L. (author), de Sterke, J.C. (author), Bruno, A. (author), Schouten, R.N. (author), di Carlo, L. (author)
We present two pulse schemes to actively deplete measurement photons from a readout resonator in the nonlinear dispersive regime of circuit QED. One method uses digital feedback conditioned on the measurement outcome, while the other is unconditional. In the absence of analytic forms and symmetries to exploit in this nonlinear regime, the...
journal article 2016
Searched for: author:"Bultink, C.C."
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