Papers
Live trends in quantum computing research, updated daily from arXiv.
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Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Universal, unambiguous concentration and distillation of Bell pairs
Orsolya Kálmán, Aurél Gábris, Igor Jex +1 more·Feb 26, 2024
The ability of preparing perfect Bell pairs with a practical scheme is of great relevance for quantum communication as well as distributed quantum computing. We propose a scheme which probabilistically, but unambiguously produces the $\left|Φ_{+}\rig...
Mitigating errors in dc magnetometry via zero-noise extrapolation
J. V. Van Dyke, Zack White, G. Quiroz·Feb 26, 2024
Zero-noise extrapolation (ZNE), a technique to estimate quantum circuit expectation values through noise scaling and extrapolation, is well-studied in the context of quantum computing. We examine the applicability of ZNE to the field of quantum sensi...
Trapped ion qubit and clock operations with a visible wavelength photonic coil resonator stabilized integrated Brillouin laser
Nitesh Chauhan, Christopher Caron, Jiawei Wang +5 more·Feb 26, 2024
Integrating precise, stable, ultra-low noise visible light lasers into atomic systems is critical for advancing quantum information sciences and improving scalability and portability. Trapped ions are a leading approach for high-fidelity quantum comp...
Noisy Quantum Simulation: Performance and Resource Considerations for the Tavis-Cummings and Heisenberg Models
Alisa Haukisalmi, Daniel Paz Ramos, M. Raasakka +3 more·Feb 26, 2024
Fault-tolerant quantum computers promise the simulation of complex quantum systems beyond the reach of classical computation. In contrast, current noisy intermediate-scale quantum (NISQ) devices are constrained by hardware noise. Consequently, quantu...
Modeling error correction with Lindblad dynamics and approximate channels
Zohar Schwartzman-Nowik, Liran Shirizly, Haggai Landa·Feb 26, 2024
We analyze the performance of a quantum error correction code subject to physically motivated noise modeled by a Lindblad master equation. We consider dissipative and coherent single-qubit terms and two-qubit crosstalk, studying how different approxi...
Efficient quantum lattice gas automata
Antonio David Bastida Zamora, L. Budinski, Ossi Niemimäki +1 more·Feb 26, 2024
This study presents a novel quantum algorithm for lattice gas automata simulation with a single time step, demonstrating logarithmic complexity in terms of $CX$ gates. The algorithm is composed of three main steps: collision, mapping, and propagation...
Probing anyonic statistics via Mach-Zehnder interferometry in quantum computers
Shiyu Zhou, Yi Teng, C. Chamon +2 more·Feb 26, 2024
We introduce a synthetic Mach-Zehnder interferometer for digitized quantum computing devices to probe fractional exchange statistics of anyonic excitations that appear in quantum spin liquids. Employing an IonQ quantum computer, we apply this scheme ...
Universal quantum operations and ancilla-based read-out for tweezer clocks
Ran Finkelstein, R. Tsai, Xiangkai Sun +6 more·Feb 25, 2024
Enhancing the precision of measurements by harnessing entanglement is a long-sought goal in quantum metrology1,2. Yet attaining the best sensitivity allowed by quantum theory in the presence of noise is an outstanding challenge, requiring optimal pro...
Shell-model study of 58Ni using quantum computing algorithm
Bharti Bhoy, P. Stevenson·Feb 23, 2024
This study presents a simulated quantum computing approach for the investigation into the shell-model energy levels of 58Ni through the application of the variational quantum eigensolver (VQE) method in combination with a problem-specific ansatz. The...
Neutron-nucleus dynamics simulations for quantum computers
Soorya Rethinasamy, Ethan Guo, Alexander Wei +2 more·Feb 22, 2024
With a view toward addressing the explosive growth in the computational demands of nuclear structure and reactions modeling, we develop a novel quantum algorithm for neutron-nucleus simulations with general potentials, which provides acceptable bound...
The Stability of Gapped Quantum Matter and Error-Correction with Adiabatic Noise
A. Lavasani, Sagar Vijay·Feb 22, 2024
The codespace of a quantum error-correcting code can often be identified with the degenerate ground-space within a gapped phase of quantum matter. We argue that the stability of such a phase is directly related to a set of coherent error processes ag...
Dynamical quantum maps for single-qubit gates under universal non-Markovian noise
J. M. Sánchez Velázquez, A. Steiner, R. Freund +4 more·Feb 22, 2024
Noise is both ubiquitous and generally deleterious in settings where precision is required. This is especially true in the quantum technology sector where system utility typically decays rapidly under its influence. Understanding the noise in quantum...
Reinforcement learning-assisted quantum architecture search for variational quantum algorithms
Akash Kundu·Feb 21, 2024
A significant hurdle in the noisy intermediate-scale quantum (NISQ) era is identifying functional quantum circuits. These circuits must also adhere to the constraints imposed by current quantum hardware limitations. Variational quantum algorithms (VQ...
Improving Threshold for Fault-Tolerant Color-Code Quantum Computing by Flagged Weight Optimization
Yugo Takada, Keisuke Fujii·Feb 21, 2024
Color codes are promising quantum error-correction (QEC) codes because they have an advantage over surface codes in that all Clifford gates can be implemented transversally. However, the thresholds of color codes under circuit-level noise are relativ...
Evaluating Ground State Energies of Chemical Systems with Low-Depth Quantum Circuits and High Accuracy
Shuo Sun, Chandan Kumar, Kevin Shen +2 more·Feb 21, 2024
Quantum computers have the potential to efficiently solve the electronic structure problem but are currently limited by noise and shallow circuits. We present an enhanced Variational Quantum Eigensolver (VQE) ansatz based on the Qubit Coupled Cluster...
How to Fault-Tolerantly Realize Any Quantum Circuit with Local Operations
Shin Ho Choe, Robert Koenig·Feb 21, 2024
We show how to realize a general quantum circuit involving gates between arbitrary pairs of qubits by means of geometrically local quantum operations and efficient classical computation. We prove that circuit-level local stochastic noise modeling an ...
Dynamics of symmetry-protected topological matter on a quantum computer
Miguel Mercado, Kyle Y. Chen, P. Darekar +3 more·Feb 20, 2024
Control of topological edge modes is desirable for encoding quantum information resiliently against external noise. Their implementation on quantum hardware, however, remains a long-standing problem due to current limitations of circuit depth and noi...
Coherent detection of discrete variable quantum key distribution using homodyne technique
Muhammad Kamran, Tahir Malik, Ayesha Jamal +2 more·Feb 20, 2024
In discrete variable quantum key distribution (DV-QKD), the homodyne detection method is frequently employed for its simplicity in use, effectiveness in terms of error correction, and suitability with contemporary optical communication systems. Being...
Exponentially Improved Dispersive Qubit Readout with Squeezed Light.
Wei Qin, A. Miranowicz, Franco Nori·Feb 19, 2024
It has been a long-standing goal to improve dispersive qubit readout with squeezed light. However, injected external squeezing (IES) cannot enable a practically interesting increase in the signal-to-noise ratio (SNR), and simultaneously, the increase...
Towards Early Fault Tolerance on a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mn>2</mml:mn><mml:mo>×</mml:mo><mml:mi>N</mml:mi></mml:math> Array of Qubits Equipped with Shuttling
A. Siegel, Armands Strikis, M. Fogarty·Feb 19, 2024
It is well understood that a two-dimensional grid of locally interacting qubits is a promising platform for achieving fault-tolerant quantum computing. However in the near future, it may prove less challenging to develop lower-dimensional structures....