Papers
Live trends in quantum computing research, updated daily from arXiv.
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Hardware platform mentions in abstracts — Photonic leads
QFactor: A Domain-Specific Optimizer for Quantum Circuit Instantiation
Alon Kukliansky, Ed Younis, L. Cincio +1 more·Jun 13, 2023
We introduce a domain-specific algorithm for numerical optimization operations used by quantum circuit instantiation, synthesis, and compilation methods. QFactor uses a tensor network formulation together with analytic methods and an iterative local ...
Optimizing control fields for adiabatic protocols in the presence of noise
Marllos E. F. Fernandes, E. Lima, L. Castelano·Jun 12, 2023
Quantum control techniques are employed to perform adiabatic quantum computing in the presence of noise. First, we analyze the adiabatic entanglement protocol (AEP) for two qubits. In this case, we found that this protocol is very robust against nois...
Splitting and Parallelizing of Quantum Convolutional Neural Networks for Learning Translationally Symmetric Data
Koki Chinzei, Q. Tran, Kazunori Maruyama +2 more·Jun 12, 2023
The quantum convolutional neural network (QCNN) is a promising quantum machine learning (QML) model that is expected to achieve quantum advantages in classically intractable problems. However, the QCNN requires a large number of measurements for data...
Navigating the 16-dimensional Hilbert space of a high-spin donor qudit with electric and magnetic fields
Irene Fernández de Fuentes, T. Botzem, M. A. Johnson +11 more·Jun 12, 2023
Efficient scaling and flexible control are key aspects of useful quantum computing hardware. Spins in semiconductors combine quantum information processing with electrons, holes or nuclei, control with electric or magnetic fields, and scalable coupli...
Quantum Phase Estimation by Compressed Sensing
Chang-Rui Yi, Cunlu Zhou, Jun Takahashi·Jun 12, 2023
As a signal recovery algorithm, compressed sensing is particularly effective when the data has low complexity and samples are scarce, which aligns natually with the task of quantum phase estimation (QPE) on early fault-tolerant quantum computers. In ...
Guarding Quantum Key Distribution with integrated Magnetic-free Nonreciprocal Structures
Qiang Liu, Yinming Huang, T. Luo +4 more·Jun 11, 2023
Inserting nonreciprocal devices at the doorways of Alice and Bob is a widely recognized countermeasure against quantum hacking attacks in quantum key distribution (QKD) systems. However, traditional integrated nonreciprocal devices, which are typical...
Quantum feedback control of a two-atom network closed by a semi-infinite waveguide
Haijin Ding, Guofeng Zhang, Mu-Tian Cheng +1 more·Jun 10, 2023
The purpose of this paper is to study the delay-dependent coherent feedback dynamics by focusing on one typical realization, i.e., a two-atom quantum network whose feedback loop is closed by a semi-infinite waveguide. In this set-up, an initially exc...
Prediction of the neutron drip line in oxygen isotopes using quantum computation
C. Sarma, Olivia Di Matteo, A. Abhishek +1 more·Jun 10, 2023
In the noisy intermediate-scale quantum era, variational algorithms have become a standard approach to solving quantum many-body problems. Here, we present variational quantum eigensolver (VQE) results of selected oxygen isotopes within the shell mod...
Mapping Molecular Hamiltonians into Hamiltonians of Modular cQED Processors.
Ningyi Lyu, A. Miano, I. Tsioutsios +7 more·Jun 10, 2023
We introduce a general method based on the operators of the Dyson-Masleev transformation to map the Hamiltonian of an arbitrary model system into the Hamiltonian of a circuit Quantum Electrodynamics (cQED) processor. Furthermore, we introduce a modul...
Tunable quantum emitters on large-scale foundry silicon photonics
Hugo Larocque, M. A. Buyukkaya, C. Errando-Herranz +11 more·Jun 10, 2023
Controlling large-scale many-body quantum systems at the level of single photons and single atomic systems is a central goal in quantum information science and technology. Intensive research and development has propelled foundry-based silicon-on-insu...
Improving Quantum Circuit Synthesis with Machine Learning
Mathias Weiden, Ed Younis, Justin Kalloor +2 more·Jun 9, 2023
In the Noisy Intermediate Scale Quantum (NISQ) era, finding implementations of quantum algorithms that mini-mize the number of expensive and error prone multi-qubit gates is vital to ensure computations produce meaningful outputs. Unitary synthesis, ...
Kerr-effect-based quantum logical gates in decoherence-free subspace
Fangfang Du, Gang Fan, Xueqin Ren·Jun 9, 2023
The decoherence effect caused by the coupling between the system and the environment undoubtedly leads to the errors in efficient implementations of two (or three) qubit logical gates in quantum information processing. Fortunately, decoherence-free s...
Broadband bandpass Purcell filter for circuit quantum electrodynamics
Haoxiong Yan, Xuntao Wu, A. Lingenfelter +10 more·Jun 9, 2023
In circuit quantum electrodynamics, qubits are typically measured using dispersively coupled readout resonators. Coupling between each readout resonator and its electrical environment, however, reduces the qubit lifetime via the Purcell effect. Inser...
Low-temperature holographic screens correspond to Einstein-Rosen bridges
M. Javarone·Jun 9, 2023
Recent conjectures on the complexity of black holes suggest that their evolution manifests in the structural properties of Einstein-Rosen bridges, like the length and volume. The complexity of black holes relates to the computational complexity of th...
Simulating Noisy Variational Quantum Algorithms: A Polynomial Approach.
Yuguo Shao, Fuchuan Wei, Song Cheng +1 more·Jun 9, 2023
Large-scale variational quantum algorithms are widely recognized as a potential pathway to achieve practical quantum advantages. However, the presence of quantum noise might suppress and undermine these advantages, which blurs the boundaries of class...
Dangling Bonds as Possible Contributors to Charge Noise in Silicon and Silicon-Germanium Quantum Dot Qubits.
J. Varley, K. G. Ray, V. Lordi·Jun 9, 2023
Spin qubits based on Si and Si1-xGex quantum dot architectures exhibit among the best coherence times of competing quantum computing technologies, yet they still suffer from charge noise that limit their qubit gate fidelities. Identifying the origins...
Coexistence of symmetry-protected topological order and Neel order in the spin-1/2 ladder antiferromagnet C9H18N2CuBr4
T. Hong, I. Makhfudz, X. Ke +7 more·Jun 9, 2023
Topological phases of matter are beyond the paradigm of Landau's symmetry breaking and have challenged our understanding of condensed matter systems. Here we report a new type of symmetry-protected topological phase of matter in the spin-1/2 coupled ...
Micromotion compensation of trapped ions by qubit transition and direct scanning of dc voltages.
Woojun Lee, Daun Chung, Jiyong Kang +4 more·Jun 9, 2023
Excess micromotion is detrimental to accurate qubit control of trapped ions, thus measuring and minimizing it is crucial. In this paper, we present a simple approach for measuring and suppressing excess micromotion of trapped ions by leveraging the e...
Kinemon: inductively shunted transmon artificial atom
D. Kalacheva, G. Fedorov, J. Zotova +4 more·Jun 9, 2023
We experimentally investigate inductively shunted transmon-type artificial atoms as an alternative to address the challenges of low anharmonicity and the need for strong charge dispersion in superconducting quantum systems. We characterize several de...
Deterministic entangling gates with nonlinear quantum photonic interferometers
Francesco Scala, D. Nigro, D. Gerace·Jun 8, 2023
The single-photon quantum computing paradigm currently relies on the multi-port interference in linear optical devices, which is intrinsically based on probabilistic measurements outcome, and thus non-deterministic. Devising a fully deterministic, un...