Dynamics of entanglement of qubits in the three-qubit Tavis — Cummings model with dipole-dipole interaction by Alexander R. Bagrov, Eugene K. Bashkirov

Subjects: “…qubits…”
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The carbon nanotube gatemon qubit by H. Riechert, S. Annabi, A. Peugeot, H. Duprez, M. Hantute, K. Watanabe, T. Taniguchi, E. Arrighi, J. Griesmar, J.-D. Pillet, L. Bretheau

“…Abstract Gate-tunable transmon qubits are based on quantum conductors used as weak links within hybrid Josephson junctions. …”
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Millimeter-Wave Superconducting Qubit by Alexander Anferov, Fanghui Wan, Shannon P. Harvey, Jonathan Simon, David I. Schuster

“…We bridge this gap by scaling up a superconducting qubit to the millimeter-wave range (near 100 GHz). …”
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Mitigating errors in logical qubits by Samuel C. Smith, Benjamin J. Brown, Stephen D. Bartlett

“…Our exclusive decoder applied to magic state distillation yields a 75% reduction in the number of physical qubits, and a 60% reduction in the total spacetime volume, including accounting for repetitions. …”
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Concatenate codes, save qubits by Satoshi Yoshida, Shiro Tamiya, Hayata Yamasaki

“…., the required number of physical qubits per logical qubit. Protocols based on high-rate quantum low-density parity-check (LDPC) codes gather considerable attention as a way to reduce the space overhead, but problematically, the existing fault-tolerant protocols for such quantum LDPC codes sacrifice other factors. …”
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Parameter optimization for the unimon qubit by Rostislav Duda, Eric Hyyppä, Olli Mukkula, Vasilii Vadimov, Mikko Möttönen

“…In this work, we develop accurate closed-form approximations for the frequency and anharmonicity of the unimon qubit that are also applicable to any single-mode superconducting qubits with a single-well potential profile, such as the quarton qubit or the kinemon qubit. …”
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Influence of initial atomic coherence and direct coupling on qubits entanglement in two-qubit Tavis — Cummings model by A. Othman, A. R. Farhutdinova, E. K. Bashkirov

Subjects: “…qubits…”
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Hexagons govern three-qubit contextuality by Metod Saniga, Frédéric Holweck, Colm Kelleher, Axel Muller, Alain Giorgetti, Henri de Boutray

“…Split Cayley hexagons of order two are distinguished finite geometries living in the three-qubit symplectic polar space in two different forms, called classical and skew. …”
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Integrating quantum materials into superconducting qubits by Kuei-Lin Chiu, Avishma J Lasrado, Cheng-Han Lo, Chung-Ting Ke, Vahid Mosallanejad, Yen-Hsiang Lin

Subjects: “…superconducting qubits…”
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The Standard Model Symmetry and Qubit Entanglement by Jochen Szangolies

“…To this end, we show that entangled systems of two and three qubits can be associated with <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>5</mn><mo>+</mo><mn>1</mn></mrow></semantics></math></inline-formula>- and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>9</mn><mo>+</mo><mn>1</mn></mrow></semantics></math></inline-formula>-dimensional spacetimes, respectively, which are reduced to <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>3</mn><mo>+</mo><mn>1</mn></mrow></semantics></math></inline-formula> dimensions upon singling out a preferred complex direction. …”
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Quantum computation with hybrid parafermion-spin qubits by Denis V. Kurlov, Melina Luethi, Anatoliy I. Lotkov, Katharina Laubscher, Jelena Klinovaja, Daniel Loss

“…We propose a universal set of single- and two-qubit quantum gates acting on a hybrid qubit formed by coupling a quantum dot spin qubit to a Z_{2m} parafermion qubit with arbitrary integer m. …”
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Spectrum analysis with parametrically modulated transmon qubits by Nir Gavrielov, Santiago Oviedo-Casado, Alex Retzker

“…Exploring the noise spectrum impacting a qubit and extending its coherence duration are fundamental components of quantum technologies. …”
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Compromise-free scaling of qubit speed and coherence by Miguel J. Carballido, Simon Svab, Rafael S. Eggli, Taras Patlatiuk, Pierre Chevalier Kwon, Jonas Schuff, Rahel M. Kaiser, Leon C. Camenzind, Ang Li, Natalia Ares, Erik P. A. M. Bakkers, Stefano Bosco, J. Carlos Egues, Daniel Loss, Dominik M. Zumbühl

“…Abstract Across leading qubit platforms, a common trade-off persists: increasing coherence comes at the cost of operational speed, reflecting the notion that protecting a qubit from its noisy surroundings also limits control over it. …”
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Transport signatures of phase fluctuations in superconducting qubits by M Wisne, Y Deng, H Cansizoglu, C Kopas, J Y Mutus, V Chandrasekhar

“…Josephson junctions supply the nonlinear inductance element in superconducting qubits. In the widely used transmon configuration, where the junction is shunted by a large capacitor, the low charging energy minimizes the sensitivity of the qubit to charge noise while maintaining the necessary anharmonicity to qubit states. …”
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The effects of disorder in superconducting materials on qubit coherence by Ran Gao, Feng Wu, Hantao Sun, Jianjun Chen, Hao Deng, Xizheng Ma, Xiaohe Miao, Zhijun Song, Xin Wan, Fei Wang, Tian Xia, Make Ying, Chao Zhang, Yaoyun Shi, Hui-Hai Zhao, Chunqing Deng

“…Abstract Introducing disorder in the superconducting materials has been considered promising to enhance the electromagnetic impedance and realize noise-resilient superconducting qubits. Despite a number of pioneering implementations, the understanding of the correlation between the material disorder and the qubit coherence is still developing. …”
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Evaluation of non-unital qubit channel capacities by S.N. Filippov

Subjects: “…qubit channel…”
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Experimental simulation of Dirac equation in superconducting qubits by Yu Zhang, Jianwen Xu, Zhuang Ma, Wen Zheng, Dong Lan, Xinsheng Tan, Yang Yu

“…We map the 3+1-dimensional Dirac equation onto the first excited manifold of four qubits to simulate the internal four-component spinor dynamics. …”
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Accurate and Honest Approximation of Correlated Qubit Noise by F. Setiawan, Alexander V. Gramolin, Elisha S. Matekole, Hari Krovi, Jacob M. Taylor

“…While a full simulation of actual noisy quantum circuits provides information about correlated noise among all qubits and is therefore accurate, it is, however, computationally expensive as it requires resources that grow exponentially with the number of qubits. …”
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Entanglement between two superconducting garge qubits by Eugene K. Bashkirov

Subjects: “…charge qubits…”
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Clifford Algebras, Spin Groups and Qubit Trees by Alexander Yurievich Vlasov

“…The modeling of more general qubit trees, as well as the relationship with the mapping used in the Bravyi–Kitaev transformation, are also briefly discussed. …”
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