Priya J. Nadkarni; Shayan Srinivasa Garani, Author at IEEE Transactions on Quantum Engineering

Fp -Linear and Fpm-Linear Qudit Codes From Dual-Containing Classical Codes

May 14, 2021Priya J. Nadkarni; Shayan Srinivasa GaraniOpen Access, Quantum InformationAdditives, Cascading style sheets, Encoding, Licenses, Linear codes, Quantum system, Qubit

Quantum code construction from two classical codes D1[n,k1,d1] and D2[n,k2,d2] over the field Fpm ( p is prime and m is an integer) satisfying the dual containing criteria D⊥1⊂D2 using the Calderbank–Shor–Steane (CSS) framework is well-studied. We show that the generalization of the CSS framework for qubits to qudits yields two different classes of codes, namely, the Fp -linear CSS codes and the well-known Fpm -linear CSS codes based on the […]

One-Dimensional Lazy Quantum Walk in Ternary System

April 21, 2021Amit Saha; Sudhindu Bikash Mandal; Debasri Saha; Amlan ChakrabartiOpen Access, Quantum Computer Architecture, Quantum InformationComputers, Hilbert space, Logic gates, Probability distribution, Quantum circuit, Quantum computing, Quantum system

Quantum walks play an important role for developing quantum algorithms and quantum simulations. Here, we introduce a first of its kind one-dimensional lazy quantum walk in the ternary quantum domain and show its equivalence for circuit realization in ternary quantum logic. Using an appropriate logical mapping of the position space on which a walker evolves […]

Survey on Quantum Circuit Compilation for Noisy Intermediate-Scale Quantum Computers: Artificial Intelligence to Heuristics

March 23, 2021Janusz Kusyk; Samah M. Saeed; Muharrem Umit UyarOpen Access, Quantum SoftwareArtificial intelligence, Computer architecture, Computers, Hardware, Logic gates, Quantum circuit, Qubit

Computationally expensive applications, including machine learning, chemical simulations, and financial modeling, are promising candidates for noisy intermediate scale quantum (NISQ) computers. In these problems, one important challenge is mapping a quantum circuit onto NISQ hardware while satisfying physical constraints of an underlying quantum architecture. Quantum circuit compilation (QCC) aims to generate feasible mappings such that […]

Cryogenic Floating-Gate CMOS Circuits for Quantum Control

March 23, 2021Jennifer Hasler; Neil Dick; Kushal Das; Brian Degnan; Alireza Moini; David ReillyOpen Access, Quantum InformationCapacitors, Cryogenics, Current measurement, Integrated circuits, Nonvolatile memory, Transistors, Tunneling

Voltage biases are often required to bias Qubits, and yet applying a static bias requires separate chip wires, dramatically increasing the system complexity. An ideal approach would be having a nonvolatile digital or analog memory to avoid these issues. This article shows floating-gate (FG) structures could be used to set and forget potentials and tunnel […]

Exploiting Symmetry Reduces the Cost of Training QAOA

March 17, 2021Ruslan Shaydulin; Stefan M. WildOpen Access, Quantum Information, Quantum SoftwareApproximation algorithms, Hardware, Linear programming, Optimization, Qubit, Tensors, Training

A promising approach to the practical application of the quantum approximate optimization algorithm (QAOA) is finding QAOA parameters classically in simulation and sampling the solutions from QAOA with optimized parameters on a quantum computer. Doing so requires repeated evaluations of QAOA energy in simulation. In this article, we propose a novel approach for accelerating the […]

Rydberg Atom Electric Field Sensors for Communications and Sensing

March 10, 2021Charles T. Fancher; David R. Scherer; Marc C. St. John; Bonnie L. Schmittberger MarlowOpen Access, Quantum InformationAtom optics, Atomic beams, Atomic measurements, Optical sensors, Probes, Radio frequency, Sensor phenomena and characterization

Rydberg atom electric field sensors are projected to enable novel capabilities for resilient communications and sensing. This quantum sensor is small-size, highly sensitive, and broadly tunable, and it has the potential for performing precision vector electric field and angle-of-arrival measurements. While these atomic electric field sensors will not replace traditional receivers in commodity applications for […]

Quantum Algorithms for Mixed Binary Optimization Applied to Transaction Settlement

March 3, 2021Lee Braine; Daniel J. Egger; Jennifer Glick; Stefan WoernerOpen Access, Quantum Computer Architecture, Quantum Information, Quantum SoftwareApproximation algorithms, Computers, Hardware, Optimization, Quantum algorithm, Quantum computing, Security

In this article, we extend variational quantum optimization algorithms for quadratic unconstrained binary optimization problems to the class of mixed binary optimization problems. This allows us to combine binary decision variables with continuous decision variables, which, for instance, enables the modeling of inequality constraints via slack variables. We propose two heuristics and introduce the transaction […]

Variational Learning for Quantum Artificial Neural Networks

February 26, 2021Francesco Tacchino; Stefano Mangini; Panagiotis Kl. Barkoutsos; Chiara Macchiavello; Dario Gerace; Ivano Tavernelli; Daniele BajoniOpen Access, Quantum InformationBiological neural networks, Encoding, Logic gates, Machine learning, Neurons, Quantum computing, Qubit

In the past few years, quantum computing and machine learning fostered rapid developments in their respective areas of application, introducing new perspectives on how information processing systems can be realized and programmed. The rapidly growing field of quantum machine learning aims at bringing together these two ongoing revolutions. Here, we first review a series of […]

Distributed Quantum Computing and Network Control for Accelerated VQE

February 9, 2021Stephen DiAdamo; Marco Ghibaudi; James CruiseOpen Access, Quantum Computer Architecture, Quantum InformationComputers, Control systems, Hardware, Logic gates, Quantum algorithm, Quantum computing, Qubit

Interconnecting small quantum computers will be essential in the future for creating large-scale, robust quantum computers. Methods for distributing monolithic quantum algorithms efficiently are, thus, needed. In this article, we consider an approach for distributing the accelerated variational quantum eigensolver algorithm over arbitrary sized—in terms of number of qubits—distributed quantum computers. We consider approaches for […]

On the Stochastic Analysis of a Quantum Entanglement Distribution Switch

February 9, 2021Gayane Vardoyan; Saikat Guha; Philippe Nain; Don TowsleyOpen Access, Quantum Computer Architecture, Quantum InformationAnalytical models, Computer architecture, Numerical models, Quantum entanglement, Qubit, Repeaters, Switches

In this article, we study a quantum entanglement distribution switch that serves k users in a star topology. We model variants of the system as continuous-time Markov chains and obtain expressions for switch capacity, expected number of qubits stored in memory at the switch, and the quantum memory occupancy distribution. We obtain a number of analytic results […]