Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Biznárová, Janka"'
Autor:
Chayanun, Lert, Biznárová, Janka, Zeng, Lunjie, Malmberg, Per, Nylander, Andreas, Osman, Amr, Rommel, Marcus, Tam, Pui Lam, Olsson, Eva, Yurgens, August, Bylander, Jonas, Roudsari, Anita Fadavi
Publikováno v:
APL Quantum 1, 026115 (2024)
We systematically investigate the influence of the fabrication process on dielectric loss in aluminum-on-silicon superconducting coplanar waveguide resonators with internal quality factors ($Q_i$) of about one million at the single-photon level. Thes
Externí odkaz:
http://arxiv.org/abs/2403.00723
Autor:
Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Rehammar, Robert, Caputo, Marco, Grönberg, Leif, Fernández-Pendás, Jorge, Kockum, Anton Frisk, Biznárová, Janka, Chen, Liangyu, Križan, Christian, Nylander, Andreas, Osman, Amr, Roudsari, Anita Fadavi, Shiri, Daryoush, Tancredi, Giovanna, Govenius, Joonas, Bylander, Jonas
Publikováno v:
PRX Quantum 5, 030350 (2024)
Quantum processors require a signal-delivery architecture with high addressability (low crosstalk) to ensure high performance already at the scale of dozens of qubits. Signal crosstalk causes inadvertent driving of quantum gates, which will adversely
Externí odkaz:
http://arxiv.org/abs/2403.00285
Autor:
Biznárová, Janka, Hernández, J. C. Rivera, Forchheimer, Daniel, Bylander, Jonas, Haviland, David B., Andersson, Gustav
Publikováno v:
Phys. Rev. Applied 22, 014063, 2024
Two-level system (TLS) loss is typically limiting the coherence of superconducting quantum circuits. The loss induced by TLS defects is nonlinear, resulting in quality factors with a strong dependence on the circulating microwave power. We observe fr
Externí odkaz:
http://arxiv.org/abs/2402.10775
Autor:
Biznárová, Janka, Osman, Amr, Rehnman, Emil, Chayanun, Lert, Križan, Christian, Malmberg, Per, Rommel, Marcus, Warren, Christopher, Delsing, Per, Yurgens, August, Bylander, Jonas, Roudsari, Anita Fadavi
Publikováno v:
npj Quantum Information, volume 10, article number 78 (2024)
We demonstrate aluminum-on-silicon planar transmon qubits with time-averaged ${T_1}$ energy relaxation times of up to ${270\,\mu s}$, corresponding to Q = 5 million, and a highest observed value of ${501\,\mu s}$. We use materials analysis techniques
Externí odkaz:
http://arxiv.org/abs/2310.06797
Autor:
Chen, Liangyu, Li, Hang-Xi, Lu, Yong, Warren, Christopher W., Križan, Christian J., Kosen, Sandoko, Rommel, Marcus, Ahmed, Shahnawaz, Osman, Amr, Biznárová, Janka, Roudsari, Anita Fadavi, Lienhard, Benjamin, Caputo, Marco, Grigoras, Kestutis, Grönberg, Leif, Govenius, Joonas, Kockum, Anton Frisk, Delsing, Per, Bylander, Jonas, Tancredi, Giovanna
High-fidelity and rapid readout of a qubit state is key to quantum computing and communication, and it is a prerequisite for quantum error correction. We present a readout scheme for superconducting qubits that combines two microwave techniques: appl
Externí odkaz:
http://arxiv.org/abs/2208.05879
Autor:
Warren, Christopher W., Fernández-Pendás, Jorge, Ahmed, Shahnawaz, Abad, Tahereh, Bengtsson, Andreas, Biznárová, Janka, Debnath, Kamanasish, Gu, Xiu, Križan, Christian, Osman, Amr, Roudsari, Anita Fadavi, Delsing, Per, Johansson, Göran, Kockum, Anton Frisk, Tancredi, Giovanna, Bylander, Jonas
Publikováno v:
npj Quantum Inf 9, 44 (2023)
While all quantum algorithms can be expressed in terms of single-qubit and two-qubit gates, more expressive gate sets can help reduce the algorithmic depth. This is important in the presence of gate errors, especially those due to decoherence. Using
Externí odkaz:
http://arxiv.org/abs/2207.02938
Autor:
Lolur, Phalgun, Skogh, Mårten, Warren, Christopher, Biznárová, Janka, Osman, Amr, Tancredi, Giovanna, Wendin, Göran, Bylander, Jonas, Rahm, Martin
Decoherence and gate errors severely limit the capabilities of state-of-the-art quantum computers. This work introduces a strategy for reference-state error mitigation (REM) of quantum chemistry that can be straightforwardly implemented on current an
Externí odkaz:
http://arxiv.org/abs/2203.14756
Autor:
Aamir, Mohammed Ali, Moreno, Claudia Castillo, Sundelin, Simon, Biznárová, Janka, Scigliuzzo, Marco, Patel, Kowshik Erappaji, Osman, Amr, Lozano, D. P., Gasparinetti, Simone
Tailoring the decay rate of structured quantum emitters into their environment opens new avenues for nonlinear quantum optics, collective phenomena, and quantum communications. Here we demonstrate a novel coupling scheme between an artificial molecul
Externí odkaz:
http://arxiv.org/abs/2202.12209
Autor:
Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Shiri, Daryoush, Warren, Christopher, Grönberg, Leif, Salonen, Jaakko, Abad, Tahereh, Biznárová, Janka, Caputo, Marco, Chen, Liangyu, Grigoras, Kestutis, Johansson, Göran, Kockum, Anton Frisk, Križan, Christian, Lozano, Daniel Pérez, Norris, Graham, Osman, Amr, Fernández-Pendás, Jorge, Ronzani, Alberto, Roudsari, Anita Fadavi, Simbierowicz, Slawomir, Tancredi, Giovanna, Wallraff, Andreas, Eichler, Christopher, Govenius, Joonas, Bylander, Jonas
Publikováno v:
Quantum Science and Technology, 7(3), 035018 (2022)
We have integrated single and coupled superconducting transmon qubits into flip-chip modules. Each module consists of two chips -- one quantum chip and one control chip -- that are bump-bonded together. We demonstrate time-averaged coherence times ex
Externí odkaz:
http://arxiv.org/abs/2112.02717
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