475 citations · 1.7k across the 23 of their papers we have counts for
23 papers
Linear-optical quantum computation with arbitrary error-correcting codes
Blayney W. Walshe, Ben Q. Baragiola, Hugo Ferretti +11
High-rate quantum error correcting codes mitigate the imposing scale of fault-tolerant quantum computers but require efficient generation of non-local, many-body entanglement. We p…
Equivalent noise properties of scalable continuous-variable cluster states
Blayney W. Walshe, Rafael N. Alexander, Takaya Matsuura +2
Optical continuous-variable cluster states (CVCSs) in combination with Gottesman-Kitaev-Preskill~(GKP) qubits enable fault-tolerant quantum computation so long as these resources a…
Measurement-based generation and preservation of cat and grid states within a continuous-variable cluster state
Miller Eaton, Carlos González-Arciniegas, Rafael N. Alexander +2
We present an algorithm to reliably generate various quantum states critical to quantum error correction and universal continuous-variable (CV) quantum computing, such as Schröding…
Streamlined quantum computing with macronode cluster states
Blayney W. Walshe, Rafael N. Alexander, Nicolas C. Menicucci +1
Continuous-variable cluster states allow for fault-tolerant measurement-based quantum computing when used in tandem with the Gottesman-Kitaev-Preskill (GKP) encoding of a qubit int…
Fault-tolerant quantum computation with static linear optics
Ilan Tzitrin, Takaya Matsuura, Rafael N. Alexander +5
The scalability of photonic implementations of fault-tolerant quantum computing based on Gottesman-Kitaev-Preskill (GKP) qubits is injured by the requirements of inline squeezing a…
Generating nonlinearities from conditional linear operations, squeezing and measurement for quantum computation and super-Heisenberg sensing
Mattias T. Johnsson, Pablo M. Poggi, Marco A. Rodríguez +2
Large optical nonlinearities can have numerous applications, ranging from the generation of cat-states for optical quantum computation, through to quantum sensing where the sensiti…
All-Optical Long-Distance Quantum Communication with Gottesman-Kitaev-Preskill qubits
Kosuke Fukui, Rafael N. Alexander, Peter van Loock
Quantum repeaters are a promising platform for realizing long-distance quantum communication and thus could form the backbone of a secure quantum internet, a scalable quantum netwo…
Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer
J. Eli Bourassa, Rafael N. Alexander, Michael Vasmer +10
Photonics is the platform of choice to build a modular, easy-to-network quantum computer operating at room temperature. However, no concrete architecture has been presented so far…
Continuous-variable gate teleportation and bosonic-code error correction
Blayney W. Walshe, Ben Q. Baragiola, Rafael N. Alexander +1
We examine continuous-variable gate teleportation using entangled states made from pure product states sent through a beamsplitter. We show that such states are Choi states for a (…
One-hundred step measurement-based quantum computation multiplexed in the time domain with 25 MHz clock frequency
Warit Asavanant, Baramee Charoensombutamon, Shota Yokoyama +8
Among various approaches toward quantum computation, measurement-based quantum computation (MBQC) multiplexed in time domain is currently a promising method for addressing the need…
Quantum-Computing Architecture based on Large-Scale Multi-Dimensional Continuous-Variable Cluster States in a Scalable Photonic Platform
Bo-Han Wu, Rafael N. Alexander, Shuai Liu +1
Quantum computing is a disruptive paradigm widely believed to be capable of solving classically intractable problems. However, the route toward full-scale quantum computers is obst…
Computational universality of symmetry-protected topologically ordered cluster phases on 2D Archimedean lattices
Austin K. Daniel, Rafael N. Alexander, Akimasa Miyake
What kinds of symmetry-protected topologically ordered (SPTO) ground states can be used for universal measurement-based quantum computation in a similar fashion to the 2D cluster s…
Time-Domain Multiplexed 2-Dimensional Cluster State: Universal Quantum Computing Platform
Warit Asavanant, Yu Shiozawa, Shota Yokoyama +8
Quantum computation promises applications that are thought to be impossible with classical computation. To realize practical quantum computation, the following three properties wil…
All-Gaussian universality and fault tolerance with the Gottesman-Kitaev-Preskill code
Ben Q. Baragiola, Giacomo Pantaleoni, Rafael N. Alexander +2
The Gottesman-Kitaev-Preskill (GKP) encoding of a qubit within an oscillator is particularly appealing for fault-tolerant quantum computing with bosons because Gaussian operations…
Holographic rainbow networks for colorful Motzkin and Fredkin spin chains
Rafael N. Alexander, Amr Ahmadain, Zhao Zhang +1
We present bulk tensor networks that exactly represent the ground states of a continuous family of one-dimensional frustration-free Hamiltonians. These states, which are known as a…
Exact holographic tensor networks for the Motzkin spin chain
Rafael N. Alexander, Glen Evenbly, Israel Klich
The study of low-dimensional quantum systems has proven to be a particularly fertile field for discovering novel types of quantum matter. When studied numerically, low-energy state…
Universal quantum computation with temporal-mode bilayer square lattices
Rafael N. Alexander, Shota Yokoyama, Akira Furusawa +1
We propose an experimental design for universal continuous-variable quantum computation that incorporates recent innovations in linear-optics-based continuous-variable cluster stat…
Flexible quantum circuits using scalable continuous-variable cluster states
Rafael N. Alexander, Nicolas C. Menicucci
We show that measurement-based quantum computation on scalable continuous-variable (CV) cluster states admits more quantum-circuit flexibility and compactness than similar protocol…
Measurement-Based Linear Optics
Rafael N. Alexander, Natasha C. Gabay, Peter P. Rohde +1
A major challenge in optical quantum processing is implementing large, stable interferometers. Here we propose a virtual, measurement-based interferometer that is programmed on the…
Randomized benchmarking in measurement-based quantum computing
Rafael N. Alexander, Peter S. Turner, Stephen D. Bartlett
Randomized benchmarking is routinely used as an efficient method for characterizing the performance of sets of elementary logic gates in small quantum devices. In the measurement-b…
One-way quantum computing with arbitrarily large time-frequency continuous-variable cluster states from a single optical parametric oscillator
Rafael N. Alexander, Pei Wang, Niranjan Sridhar +3
One-way quantum computing is experimentally appealing because it requires only local measurements on an entangled resource called a cluster state. Record-size, but non-universal, c…
Comment on "Towards universal quantum computation through relativistic motion"
Rafael N. Alexander, Natasha C. Gabay, Nicolas C. Menicucci
The work reported in arXiv:1311.5619v1 proposes to produce continuous-variable cluster states through relativistic motion of cavities. This proposal does not produce the states cla…
Noise analysis of single-qumode Gaussian operations using continuous-variable cluster states
Rafael N. Alexander, Seiji C. Armstrong, Ryuji Ukai +1
We consider measurement-based quantum computation that uses scalable continuous-variable cluster states with a one-dimensional topology. The physical resource, known here as the du…