Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
27,548
This Month
1,041
Today
0
Research Volume
12,907 papers in 12 months (-5% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
Optimized auxiliary oscillators for the simulation of general open quantum systems
F. Mascherpa, A. Smirne, D. Tamascelli +4 more·Apr 9, 2019
A method for the systematic construction of few-body damped harmonic oscillator networks accurately reproducing the effect of general bosonic environments in open quantum systems is presented. Under the sole assumptions of a Gaussian environment and ...
Study of Decoherence in Quantum Computers: A Circuit-Design Perspective
Abdullah Ash-Saki, M. Alam, Swaroop Ghosh·Apr 8, 2019
Decoherence of quantum states is a major hurdle towards scalable and reliable quantum computing. Lower decoherence (i.e., higher fidelity) can alleviate the error correction overhead and obviate the need for energy-intensive noise reduction technique...
Measurement-Induced Boolean Dynamics and Controllability for Quantum Networks
Hongsheng Qi, I. Petersen, Guodong Shi·Apr 4, 2019
In this paper, we study dynamical quantum networks which evolve according to Schrodinger equations but subject to sequential local or global quantum measurements. A network of qubits forms a composite quantum system whose state undergoes unitary evol...
Efficient Quantum Error Correction of Dephasing Induced by a Common Fluctuator.
David Layden, Mo Chen, P. Cappellaro·Mar 4, 2019
Quantum error correction is expected to be essential in large-scale quantum technologies. However, the substantial overhead of qubits it requires is thought to greatly limit its utility in smaller, near-term devices. Here we introduce a new family of...
Micromotion-enhanced fast entangling gates for trapped-ion quantum computing
Alexander K. Ratcliffe, L. Oberg, J. Hope·Feb 18, 2019
RF-induced micromotion in trapped ion systems is typically minimised or circumvented to avoid off-resonant couplings for adiabatic processes such as multi-ion gate operations. Non-adiabatic entangling gates (so-called `fast gates') do not require res...
Downfolding of many-body Hamiltonians using active-space models: Extension of the sub-system embedding sub-algebras approach to unitary coupled cluster formalisms.
Nicholas P. Bauman, E. Bylaska, S. Krishnamoorthy +6 more·Feb 5, 2019
In this paper, we discuss the extension of the recently introduced subsystem embedding subalgebra coupled cluster (SES-CC) formalism to unitary CC formalisms. In analogy to the standard single-reference SES-CC formalism, its unitary CC extension allo...
Continuous-time Quantum Error Correction with Noise-assisted Quantum Feedback
G. Cardona, A. Sarlette, P. Rouchon·Jan 31, 2019
We address the standard quantum error correction using the three-qubit bit-flip code, yet in continuous-time. This entails rendering a target manifold of quantum states globally attractive. Previous feedback designs could feature spurious equilibria,...
Analytically Computable Symmetric Quantum Correlations
Li-qiang Zhang, Si-ren Yang, Chang-shui Yu·Jan 15, 2019
One of the greatest challenges in developing the resource theory of a quantum feature is to establish an analytically computable quantifier, which directly limits the practicability of such quantifiers. Here, analytic quantifiers of both the symmetri...
Nonreciprocity in a strongly coupled three-mode optomechanical circulatory system.
Cheng Shang, H. Z. Shen, X. Yi·Nov 25, 2018
In this work, we propose a scheme in three-mode optical systems to simulate a strongly coupled optomechanical system. The nonreciprocity observed in such a three-mode optomechanical circulatory system (OMCS) is explored. To be specific, we first deri...
Consequences of unitary evolution of coupled qubit-resonator systems for stabilizing circuits in surface codes
H. Naus, R. Versluis·Nov 24, 2018
Surface codes based on stabilizer circuits may pave the way for large scale fault-tolerant quantum computation. The surface code uses only single- and two-qubit gates and the error threshold falls close to 1% for a large range of errors. Among the mo...
Nonpairwise Interactions Induced by Virtual Transitions in Four Coupled Artificial Atoms
M. Schöndorf, F. Wilhelm·Nov 19, 2018
The field of quantum information has matured and various protocols implementing a quantum computer are being pursued. Most similar to a classical computer is the circuit model. In 2007 Aharonov et al. showed the equivalence between the circuit model ...
Field Induced Oscillation of Two Majorana Modes in a Quantum Ring
Yue Yu, K. Szeto·Nov 14, 2018
We calculate the topological boundary modes found for quantum wire for a quantum ring. For the symmetric ring we find analytical solutions for two quasi-particles identifiable as the Majorana states and for asymmetric ring, we have also find approxim...
Quantum causal influence
Jordan S. Cotler, Xizhi Han, X. Qi +1 more·Nov 13, 2018
A bstractWe introduce a framework to study the emergence of time and causal structure in quantum many-body systems. In doing so, we consider quantum states which encode spacetime dynamics, and develop information theoretic tools to extract the causal...
VanQver: the variational and adiabatically navigated quantum eigensolver
S. Matsuura, T. Yamazaki, Valentin Senicourt +2 more·Oct 26, 2018
The accelerated progress in manufacturing noisy, intermediate-scale quantum (NISQ) computing hardware has opened the possibility of exploring its application in transforming approaches to solving computationally challenging problems. The important li...
Incorporation of random alloy GaBixAs1−x barriers in InAs quantum dot molecules: Energy levels and confined hole states
A. Lin, M. Doty, G. Bryant·Oct 22, 2018
Self-assembled InAs quantum dots (QDs), which have long hole-spin coherence times and are amenable to optical control schemes, have long been explored as building blocks for qubit architectures. One such design consists of vertically stacking two QDs...
Boosting linear-optical Bell measurement success probability with predetection squeezing and imperfect photon-number-resolving detectors
Thomas Kilmer, S. Guha·Sep 25, 2018
Linear optical realizations of Bell state measurement (BSM) on two single-photon qubits succeed with probability $p_s$ no higher than $0.5$. However pre-detection quadrature squeezing, i.e., quantum noise limited phase sensitive amplification, in the...
Fast, Accurate, and Realizable Two-Qubit Entangling Gates by Quantum Interference in Detuned Rabi Cycles of Rydberg Atoms
Xiao-Feng Shi·Sep 24, 2018
High-fidelity entangling quantum gates based on Rydberg interactions are required for scalable quantum computing with neutral atoms. Their realization, however, meets a major stumbling block -- the motion-induced dephasing of the transition between t...
Induced quantum dot probe for material characterization.
Y. Shim, R. Ruskov, Hilary M. Hurst +1 more·Sep 10, 2018
We propose a non-destructive means of characterizing a semiconductor wafer via measuring parameters of an induced quantum dot on the material system of interest with a separate probe chip that can also house the measurement circuitry. We show that a ...
Logical measurement-based quantum computation in circuit-QED
J. Joo, Chang-Woo Lee, S. Kono +1 more·Aug 23, 2018
We propose a new scheme of measurement-based quantum computation (MBQC) using an error-correcting code against photon-loss in circuit quantum electrodynamics. We describe a specific protocol of logical single-qubit gates given by sequential cavity me...
Network architecture for a topological quantum computer in silicon
B. Buonacorsi, Z. Cai, E. B. Ramirez +7 more·Jul 26, 2018
A design for a large-scale surface code quantum processor based on a node/network approach is introduced for semiconductor quantum dot spin qubits. The minimal node contains only seven quantum dots, and nodes are separated on the micron scale, creati...