Papers
Live trends in quantum computing research, updated daily from arXiv.
Total Papers
31,714
This Month
152
Today
0
Research Volume
15,746 papers in 12 months (-37% vs prior quarter)
Research Focus Areas
Papers by research theme (12 months). Hover for details.
Qubit Platforms
Hardware platform mentions in abstracts — Photonic leads
On the Entanglement Cost of One-Shot Compression
Shima Bab Hadiashar, A. Nayak·May 6, 2019
We revisit the task of visible compression of an ensemble of quantum states with entanglement assistance in the one-shot setting. The protocols achieving the best compression use many more qubits of shared entanglement than the number of qubits in th...
Matrix product states with adaptive global symmetries
Chu Guo, D. Poletti·May 5, 2019
Quantum many body physics simulations with Matrix Product States can often be accelerated if the quantum symmetries present in the system are explicitly taken into account. Conventionally, quantum symmetries have to be determined before hand when con...
Quantum Hamiltonian Identification With Classical Colored Measurement Noise
Lingyu Tan, Daoyi Dong, Dewei Li +1 more·May 5, 2019
In this brief, we present a Hamiltonian-identification method for a closed quantum system whose time-trace observables are measured with colored measurement noise. The dynamics of the quantum system are described by a Liouville equation that can be c...
Efficient Quantum Gates for Individual Nuclear Spin Qubits by Indirect Control.
Swathi S. Hegde, Jingfu Zhang, D. Suter·May 5, 2019
Hybrid quantum registers, such as electron-nuclear spin systems, have emerged as promising hardware for implementing quantum information and computing protocols in scalable systems. Nevertheless, the coherent control of such systems still faces chall...
Quantum chemistry as a benchmark for near-term quantum computers
A. McCaskey, Zachary P. Parks, J. Jakowski +4 more·May 4, 2019
We present a quantum chemistry benchmark for noisy intermediate-scale quantum computers that leverages the variational quantum eigensolver, active-space reduction, a reduced unitary coupled cluster ansatz, and reduced density purification as error mi...
Quantum singular value decomposer
Carlos Bravo-Prieto, Diego Garc'ia-Mart'in, J. Latorre·May 3, 2019
We present a variational quantum circuit that produces the singular value decomposition of a bipartite pure state. The proposed circuit, which we name quantum singular value decomposer or QSVD, is made of two unitaries respectively acting on each par...
The Power of One Qubit in Machine Learning.
R. Ghobadi, J. S. Oberoi, Ehsan Zahedinejhad·May 3, 2019
Kernel methods are used extensively in classical machine learning, especially in the field of pattern analysis. In this paper, we propose a kernel-based quantum machine learning algorithm that can be implemented on a near-term, intermediate scale qua...
Computing Quantum Channel Capacities
Navneeth Ramakrishnan, Raban Iten, V. Scholz +1 more·May 3, 2019
The capacity of noisy quantum channels characterizes the highest rate at which information can be reliably transmitted and it is therefore of practical as well as fundamental importance. Capacities of classical channels are computed using alternating...
Full-field mode sorter using two optimized phase transformations for high-dimensional quantum cryptography
R. Fickler, F. Bouchard, E. Giese +3 more·May 3, 2019
High-dimensional encoding schemes have emerged as a novel way to perform quantum information tasks. For high dimensionality, temporal and transverse spatial modes of photons are the two paradigmatic degrees of freedom commonly used in such experiment...
Taming convergence in the determinant approach for x-ray excitation spectra
Yufeng Liang, D. Prendergast·May 2, 2019
A determinant formalism in combination with \emph{ab initio} calculations proposed recently has paved a new way for simulating and interpreting x-ray excitation spectra. The new method systematically takes into account many-electron effects in the Ma...
Resonant microwave-mediated interactions between distant electron spins
F. Borjans, X. Croot, Xiao Mi +3 more·May 2, 2019
Nonlocal qubit interactions are a hallmark of advanced quantum information technologies1–5. The ability to transfer quantum states and generate entanglement over distances much larger than qubit length scales greatly increases connectivity and is an ...
Generation of multicomponent atomic Schrödinger cat states of up to 20 qubits
Chao Song, Kai Xu, Hekang Li +13 more·May 1, 2019
Entanglement goes large The success of quantum computing relies on the ability to entangle large-scale systems. Various platforms are being pursued, with architectures based on superconducting qubits and trapped atoms being the most advanced. By enta...
One Additional Qubit is Enough: Encoded Embeddings for Boolean Components in Quantum Circuits
Alwin Zulehner, Philipp Niemann, R. Drechsler +1 more·May 1, 2019
Research on quantum computing has recently gained significant momentum since first physical devices became available. Many quantum algorithms make use of so-called oracles that implement Boolean functions and are queried with highly superposed input ...
Bias-preserving gates with stabilized cat qubits
S. Puri, L. St-Jean, J. Gross +11 more·May 1, 2019
Noise asymmetry in the quantum operations with cat-qubits is exploited for efficient fault-tolerant quantum error correction. The code capacity threshold for error correction using biased-noise qubits is known to be higher than with qubits without su...
Automated generation of Kochen-Specker sets
M. Pavičić, Mordecai Waegell, N. Megill +1 more·May 1, 2019
Quantum contextuality turns out to be a necessary resource for universal quantum computation and also has applications in quantum communication. Thus it becomes important to generate contextual sets of arbitrary structure and complexity to enable a v...
QKD in Isabelle - Bayesian Calculation
F. Kammüller·May 1, 2019
In this paper, we present a first step towards a formalisation of the Quantum Key Distribution algorithm in Isabelle. We focus on the formalisation of the main probabilistic argument why Bob cannot be certain about the key bit sent by Alice before he...
Quantum Generalized Linear Models
Colleen M. Farrelly, Srikanth Namuduri, U. Chukwu·May 1, 2019
Generalized linear models (GLM) are link function based statistical models. Many supervised learning algorithms are extensions of GLMs and have link functions built into the algorithm to model different outcome distributions. There are two major draw...
Scalable Majorana vortex modes in iron-based superconductors
Ching-Kai Chiu, T. Machida, Yingyi Huang +2 more·Apr 30, 2019
A simulation study with experimental data analysis shows the presence of multiple Majorana modes in iron-based superconductors. The iron-based superconductor FeTexSe1−x is one of the material candidates hosting Majorana vortex modes residing in the v...
Knuth-Bendix Completion Algorithm and Shuffle Algebras For Compiling NISQ Circuits
Raouf Dridi, H. Alghassi, S. Tayur·Apr 30, 2019
Compiling quantum circuits lends itself to an elegant formulation in the language of rewriting systems on non commutative polynomial algebras $\mathbb Q\langle X\rangle$. The alphabet $X$ is the set of the allowed hardware 2-qubit gates. The set of g...
Entanglement, and unsorted database search in noise-based logic
L. Kish, W. Daugherity·Apr 30, 2019
We explore the collapse of “wavefunction” and the measurement of entanglement in the superpositions of hyperspace vectors in classical physical instantaneous-noise-based logic (INBL). We find both similarities with and major differences from the rela...