Relevant bibliographies by topics / Qubit stability

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Academic literature on the topic 'Qubit stability'

Author: Grafiati
Published: 2 June 2025
Last updated: 19 July 2025

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Journal articles on the topic "Qubit stability"

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Benenti, G., G. Casati, and S. Montangero. "Stability of Quantum Computing in the Presence of Imperfections." International Journal of Modern Physics B 17, no. 22n24 (2003): 3932–46. http://dx.doi.org/10.1142/s0217979203021927.

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We model an isolated quantum computer as a two-dimensional lattice of qubits (spin halves) with fluctuations in individual qubit energies and residual short-range inter-qubit couplings. We show that above a critical inter-qubit coupling strength, quantum chaos sets in and this results in the interaction induced dynamical thermalization and occupation numbers well described by the Fermi–Dirac distribution. This thermalization destroys the noninteracting qubit structure and sets serious requirements for the quantum computer operability. We then construct a quantum algorithm which uses qubits in
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Reichardt, B. W. "Quantum universality by state distillation." Quantum Information and Computation 9, no. 11&12 (2009): 1030–52. http://dx.doi.org/10.26421/qic9.11-12-7.

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Quantum universality can be achieved using classically controlled stabilizer operations and repeated preparation of certain ancilla states. Which ancilla states suffice for universality? This ``magic states distillation" question is closely related to quantum fault tolerance. Lower bounds on the noise tolerable on the ancilla help give lower bounds on the tolerable noise rate threshold for fault-tolerant computation. Upper bounds show the limits of threshold upper-bound arguments based on the Gottesman-Knill theorem. We extend the range of single-qubit mixed states that are known to give unive
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Yao, Yuchong. "Qubit: The Leap into Quantum Computation." Theoretical and Natural Science 51, no. 1 (2024): 43–50. http://dx.doi.org/10.54254/2753-8818/51/2024ch0159.

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Abstract. This article delves into the fundamental aspects of qubits in quantum computation, emphasizing their coordination, mathematical representation through the Bloch Sphere, and the unique advantages and challenges of superconducting, trapped ion, and photonic qubits. It highlights the transformative potential of quantum algorithms in solving complex problems in cryptography and information security, while addressing key sources of quantum errors such as decoherence and quantum noise. The study discusses advanced error correction methods and underscores the necessity of improving qubit co
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Researcher. "DESIGN AND IMPLEMENTATION OF FAULT-TOLERANT ARCHITECTURES IN SUPERCONDUCTING QUBIT SYSTEMS FOR LONG-TERM QUANTUM STABILITY." DESIGN AND IMPLEMENTATION OF FAULT-TOLERANT ARCHITECTURES IN SUPERCONDUCTING QUBIT SYSTEMS FOR LONG-TERM QUANTUM STABILITY 3, no. 1 (2025): 1–7. https://doi.org/10.5281/zenodo.14738021.

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Superconducting qubits are a cornerstone of quantum computing due to their high coherence times and scalability. However, quantum systems are inherently fragile and susceptible to decoherence, errors, and noise. This paper explores the design and implementation of fault-tolerant architectures in superconducting qubit systems to achieve long-term quantum stability. We provide an in-depth review of existing literature, analyze fault-tolerance techniques, and propose enhancements for practical quantum error correction. Graphical and tabular insights highlight the comparative performance of variou
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Mohamed, A.-B. A., H. A. Hessian, F. S. Al-Duais, and H. Eleuch. "Quantum coherence induced by a flux qubit coupled by a resonator coherent field through a two-photon interaction." Physica Scripta 96, no. 12 (2021): 125120. http://dx.doi.org/10.1088/1402-4896/ac3fd0.

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Abstract The intrinsic decoherence effects on a flux qubit coupled to a resonator through a two-photon interaction where the resonator field is initially in coherent and even coherent states are investigated. The qubit-resonator entanglement and coherence loss (mixedness) of the system and its subsystems are examined using entropy and negativity. The ability of the qubit-resonator interaction to generate quantum coherence (qubit-resonator entanglement and mixedness) is shown to be dependent on the initial cavity non-classicality, detuning, and decoherence. For larger values of the qubit-resona
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Golkar, S., and M. K. Tavassoly. "Atomic motion and dipole–dipole effects on the stability of atom–atom entanglement in Markovian/non-Markovian reservoir." Modern Physics Letters A 34, no. 10 (2019): 1950077. http://dx.doi.org/10.1142/s0217732319500779.

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In this paper, we consider the entanglement dynamics of two identical qubits (two-level atoms) accompanied by dipole–dipole interaction within a common reservoir in the strong and weak coupling regimes. We suppose that the qubits move in the reservoir which is at zero temperature. Using the time-dependent Schrödinger equation, the state vector of the qubits-reservoir system is obtained by which we can evaluate the concurrence as a suitable measure of entanglement between the two qubits. The results show that by choosing special initial conditions for the qubits, a different dynamical behavior
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Alicki, R., M. Horodecki, P. Horodecki, and R. Horodecki. "On Thermal Stability of Topological Qubit in Kitaev's 4D Model." Open Systems & Information Dynamics 17, no. 01 (2010): 1–20. http://dx.doi.org/10.1142/s1230161210000023.

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We analyse stability of the four-dimensional Kitaev model — a candidate for scalable quantum memory — in finite temperature within the weak coupling Markovian limit. It is shown that, below a critical temperature, certain topological qubit observables X and Z possess relaxation times exponentially long in the size of the system. Their construction involves polynomial in system size algorithm which uses as an input the results of measurements performed on all individual spins. We also discuss the drawbacks of such candidate for quantum memory and mention the implications of the stability of qub
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Muñoz, Carlos, Luis Roa, and Andrei B. Klimov. "Stability of Bi-Partite Correlations in Symmetric N-Qubit States Under Deterministic Measurements." Physics 7, no. 2 (2025): 12. https://doi.org/10.3390/physics7020012.

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In this paper, we analyze the distribution of bi-partite correlations in pure symmetric N-qubit states during local deterministic measurements, which ensure the same value of the reduced purities in the outcome states. It is analytically shown that all reduced purities grow in the process of deterministic measurements. This allows us to characterize the stability of bi-partite entanglement during the optimal correlation transfer under single-qubit measurements in the asymptotic limit N≫1.
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Mohamed, Abdel-Baset A., and Hichem Eleuch. "Entanglement Dynamics Induced by a Squeezed Coherent Cavity Coupled Nonlinearly with a Qubit and Filled with a Kerr-Like Medium." Entropy 23, no. 5 (2021): 496. http://dx.doi.org/10.3390/e23050496.

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An analytical solution for a master equation describing the dynamics of a qubit interacting with a nonlinear Kerr-like cavity through intensity-dependent coupling is established. A superposition of squeezed coherent states is propped as the initial cavity field. The dynamics of the entangled qubit-cavity states are explored by negativity for different deformed function of the intensity-dependent coupling. We have examined the effects of the Kerr-like nonlinearity and the qubit-cavity detuning as well as the phase cavity damping on the generated entanglement. The intensity-dependent coupling in
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Enríquez, Marco, Alfonso Jaimes-Nájera, and Francisco Delgado. "Single-Qubit Driving Fields and Mathieu Functions." Symmetry 11, no. 9 (2019): 1172. http://dx.doi.org/10.3390/sym11091172.

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We report a new family of time-dependent single-qubit radiation fields for which the correspondent evolution operator can be disentangled in an exact way via the Wei–Norman formalism. Such fields are characterized in terms of the Mathieu functions. We show that the regions of stability of the Mathieu functions determine the nature of the driving fields: For parameters in the stable region, the fields are oscillating, being able to be periodic under certain conditions. Whereas, for parameters in the instability region, the fields are pulse-like. In addition, in the stability region, this family
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Book chapters on the topic "Qubit stability"

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Tamura, Kentaro, and Yutaka Shikano. "Quantum Random Numbers Generated by a Cloud Superconducting Quantum Computer." In International Symposium on Mathematics, Quantum Theory, and Cryptography. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5191-8_6.

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Abstract A cloud quantum computer is similar to a random number generator in that its physical mechanism is inaccessible to its users. In this respect, a cloud quantum computer is a black box. In both devices, its users decide the device condition from the output. A framework to achieve this exists in the field of random number generation in the form of statistical tests for random number generators. In the present study, we generated random numbers on a 20-qubit cloud quantum computer and evaluated the condition and stability of its qubits using statistical tests for random number generators. As a result, we observed that some qubits were more biased than others. Statistical tests for random number generators may provide a simple indicator of qubit condition and stability, enabling users to decide for themselves which qubits inside a cloud quantum computer to use.
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Mangaiyarkkarasi, J., and J. Shanthalakshmi Revathy. "Semiconductor Innovations in Quantum Computing." In Advances in Mechatronics and Mechanical Engineering. IGI Global, 2024. http://dx.doi.org/10.4018/979-8-3693-7076-6.ch005.

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Quantum computing represents a transformative leap in computational power, capable of solving problems beyond the reach of classical computers. This chapter focuses on the crucial role of semiconductor advancements in developing quantum computing, highlighting key technological breakthroughs and engineering challenges. It begins with an overview of quantum computing principles, emphasizing qubits' unique properties like superposition and entanglement, which enable parallel computations. The chapter then delves into semiconductor-based qubits, including silicon-based quantum dots, superconducting qubits, and spin qubits, exploring their operational principles, fabrication techniques, and performance metrics. It also examines material science innovations such as isotopically purified silicon and silicon-germanium heterostructures, essential for qubit stability and scalability. Additionally, the chapter addresses engineering challenges like quantum error correction and the integration of quantum and classical computing systems.
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Manenti, Riccardo. "Quantum circuits." In Quantum Information Science. Oxford University PressOxford, 2023. http://dx.doi.org/10.1093/oso/9780198787488.003.0005.

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Abstract In this chapter, we describe the circuit model of quantum computation, focusing on the initialization of a set of qubits, their unitary evolution, and final projective measurement. We outline Di Vincenzo’s criteria for constructing a functional quantum computer. We describe single-qubit gates and measurements, and we present two-qubit gates. We prove that single-qubit gates and a particular two-qubit gate, the CNOT gate, are universal for quantum computation. In the last part of the chapter, we present the Clifford group of unitary transformations that stabilize the Pauli group, and the Gottesman-Knill theorem.
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Selvin, Steve. "Linear Logistic Regression." In Epidemiologic Analysis. Oxford University PressNew York, NY, 2001. http://dx.doi.org/10.1093/oso/9780195144895.003.0010.

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Abstract Measures of hypertension and noise exposure were collected from 1101 women working in a textile factory in Beijing, China (only women make up the workforce). All sampled women were employed for at least five years, each at essentially the same task. Each worker was assigned to her task within the plant at “random. “ That is, when a current worker retired or quit (a rare event), a new worker (about age 19) was assigned to the vacated job and typ­ ically continued to do the same task until retirement. The textile factory envi­ ronment was chosen because of the stability of the workforce and the spatial uniformity of each worker’s exposure to noise sound pressure level (SPL). The SPL was measured as a time-weighted average. Hypertension was defined as systolic blood pressure greater than 160 mm Hg or diastolic pressure greater than 95 mm Hg. Additionally, workers taking antihypertension drugs were classified as hypertensive regardless of their blood pressure levels.
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Daley, Dennis C., and Antoine Douaihy. "The Recovery Process for Addiction and Mood Disorders." In Addiction and Mood Disorders. Oxford University PressNew York, NY, 2006. http://dx.doi.org/10.1093/oso/9780195311297.003.0004.

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Abstract Recovery is the process of managing your addiction and mood disorder and making changes in your life.1 Recovery requires hard work, discipline, a commitment to change, and a willingness to address both of your disorders. Getting sober from alcohol or other drugs is one of your first recovery tasks. If you can’t quit on your own, or if you relapse after short periods of abstinence, you may need to be detoxified or attend a structured substance abuse or dual-diagnosis treatment program to break the cycle of addiction. Abstinence is recommended because continued substance use can have a negative effect on your mood disorder and your motivation and can give an “incorrect” reading of the level of some antidepressant medications in your bloodstream. You also have to stabilize the acute symptoms of your mood disorder, such as mania, depression, or suicidality. Otherwise, it will be harder to stop using substances.
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Conference papers on the topic "Qubit stability"

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Zarutskiy, S., A. O. Kadykov, L. A. Akopyan, A. Matveev, N. V. Morozov, and K. Lakhmanskiy. "Constructing Confocal Fabry-Perot cavity to stabilize multiple lasers for 40Ca+ optical qubit." In 2024 International Conference Laser Optics (ICLO). IEEE, 2024. http://dx.doi.org/10.1109/iclo59702.2024.10624352.

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Tsai, Ting, I.-Hsiang Wang, Chi-Cheng Lai, David M. T. Kuo, and Pei-Wen Li. "Device and Technology Codesign of Germanium Quantum-Dots Qubits with Optimal Charge Stability." In 2023 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2023. http://dx.doi.org/10.7567/ssdm.2023.b-1-04.

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