A two-qubit photonic quantum processor and its application to solving systems of linear equations

Stefanie Barz; Ivan Kassal; Martin Ringbauer; Yannick Ole Lipp; Borivoje Dakic; Alan Aspuru-Guzik; Philip Walther

doi:10.1038/srep06115

A two-qubit photonic quantum processor and its application to solving systems of linear equations

Stefanie Barz (Korresp. Autor*in), Ivan Kassal, Martin Ringbauer, Yannick Ole Lipp, Borivoje Dakic, Alan Aspuru-Guzik, Philip Walther

Quantenoptik, Quantennanophysik und Quanteninformation

Veröffentlichungen: Beitrag in Fachzeitschrift › Artikel › Peer Reviewed

Abstract

Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.

Originalsprache	Englisch
Aufsatznummer	6115
Seitenumfang	5
Fachzeitschrift	Scientific Reports
Jahrgang	4
DOIs	https://doi.org/10.1038/srep06115
Publikationsstatus	Veröffentlicht - 19 Aug. 2014

ÖFOS 2012

103025 Quantenmechanik
103019 Mathematische Physik

Zugriff auf Dokument

10.1038/srep06115Lizenz: CC BY-NC-ND 4.0

Andere Dateien und Links

Verknüpfung zur Publikation in Scopus

GRASP: GRAPHENE-BASED SINGLE-PHOTON NONLINEAR OPTICAL DEVICES
Walther, P. & Paulovics, V.
1/01/14 → 31/12/17
Projekt: Forschungsförderung
EQuaM: Emulators of Quantum Frustrated Magnetism
Walther, P. & Paulovics, V.
1/10/13 → 30/06/17
Projekt: Forschungsförderung
PICQUE: Photonic Integrated Compound Quantum Encoding
Walther, P. & Paulovics, V.
1/09/13 → 31/08/17
Projekt: Forschungsförderung

Zitationsweisen

@article{362dee148c3e493aa45956acf0731385,

title = "A two-qubit photonic quantum processor and its application to solving systems of linear equations",

abstract = "Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.",

keywords = "ALGORITHM, QUBITS",

author = "Stefanie Barz and Ivan Kassal and Martin Ringbauer and Lipp, {Yannick Ole} and Borivoje Dakic and Alan Aspuru-Guzik and Philip Walther",

note = "Funding Information: We thank Frank Verstraete for valuable discussions and Thomas Lindner for assistance in the laboratory. I.K. was supported by a UQ Postdoctoral Research Fellowship and the ARC Centres of Excellence for Engineered Quantum Systems (CE110001013) and Quantum Computation and Communication Technology (CE110001027). A.A.G. thanks the Hughes Research Laboratory (M1144-201167-DS), Air Force Research Office (FA9550-12-1-0046 and 10323836-SUB), and the Corning, Sloan and Dreyfus foundations for their support. P.W. acknowledges support from the European Commission, Q-ESSENCE (No. 248095), QUILMI (No. 295293), EQUAM (No. 323714), PICQUE (No. 608062), GRASP (No. 613024), and the ERA-Net CHISTERA project QUASAR, the John Templeton Foundation, the Vienna Center for Quantum Science and Technology (VCQ), the Austrian Nano-initiative NAP Platon, the Austrian Science Fund (FWF) through the SFB FoQuS (F4006-N16), START (Y585-N20) and the doctoral programme CoQuS, the Vienna Science and Technology Fund (WWTF, grant ICT12-041), and the United States Air Force Office of Scientific Research (FA8655-11-1-3004).",

year = "2014",

month = aug,

day = "19",

doi = "10.1038/srep06115",

language = "English",

volume = "4",

journal = "Scientific Reports",

issn = "2045-2322",

publisher = "NATURE PUBLISHING GROUP",

}

TY - JOUR

T1 - A two-qubit photonic quantum processor and its application to solving systems of linear equations

AU - Barz, Stefanie

AU - Kassal, Ivan

AU - Ringbauer, Martin

AU - Lipp, Yannick Ole

AU - Dakic, Borivoje

AU - Aspuru-Guzik, Alan

AU - Walther, Philip

N1 - Funding Information: We thank Frank Verstraete for valuable discussions and Thomas Lindner for assistance in the laboratory. I.K. was supported by a UQ Postdoctoral Research Fellowship and the ARC Centres of Excellence for Engineered Quantum Systems (CE110001013) and Quantum Computation and Communication Technology (CE110001027). A.A.G. thanks the Hughes Research Laboratory (M1144-201167-DS), Air Force Research Office (FA9550-12-1-0046 and 10323836-SUB), and the Corning, Sloan and Dreyfus foundations for their support. P.W. acknowledges support from the European Commission, Q-ESSENCE (No. 248095), QUILMI (No. 295293), EQUAM (No. 323714), PICQUE (No. 608062), GRASP (No. 613024), and the ERA-Net CHISTERA project QUASAR, the John Templeton Foundation, the Vienna Center for Quantum Science and Technology (VCQ), the Austrian Nano-initiative NAP Platon, the Austrian Science Fund (FWF) through the SFB FoQuS (F4006-N16), START (Y585-N20) and the doctoral programme CoQuS, the Vienna Science and Technology Fund (WWTF, grant ICT12-041), and the United States Air Force Office of Scientific Research (FA8655-11-1-3004).

PY - 2014/8/19

Y1 - 2014/8/19

N2 - Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.

AB - Large-scale quantum computers will require the ability to apply long sequences of entangling gates to many qubits. In a photonic architecture, where single-qubit gates can be performed easily and precisely, the application of consecutive two-qubit entangling gates has been a significant obstacle. Here, we demonstrate a two-qubit photonic quantum processor that implements two consecutive CNOT gates on the same pair of polarisation-encoded qubits. To demonstrate the flexibility of our system, we implement various instances of the quantum algorithm for solving of systems of linear equations.

KW - ALGORITHM

KW - QUBITS

UR - http://www.scopus.com/inward/record.url?scp=84906545837&partnerID=8YFLogxK

U2 - 10.1038/srep06115

DO - 10.1038/srep06115

M3 - Article

SN - 2045-2322

VL - 4

JO - Scientific Reports

JF - Scientific Reports

M1 - 6115

ER -

A two-qubit photonic quantum processor and its application to solving systems of linear equations

Abstract

ÖFOS 2012

Zugriff auf Dokument

Andere Dateien und Links

Fingerprint

Projekte

GRASP: GRAPHENE-BASED SINGLE-PHOTON NONLINEAR OPTICAL DEVICES

EQuaM: Emulators of Quantum Frustrated Magnetism

PICQUE: Photonic Integrated Compound Quantum Encoding

Zitationsweisen