Readout of a quantum processor with high dynamic range Josephson parametric amplifiers

White, T; Opremcak, A; Sterling, G; Korotkov, A; Sank, D; Acharya, R; Ansmann, M; Arute, F; Arya, K; Bardin, JC; Bengtsson, A; Bourassa, A; Bovaird, J; Brill, L; Buckley, BB; Buell, DA; Burger, T; Burkett, B; Bushnell, N; Chen, Z; Chiaro, B; Cogan, J; Collins, R; Crook, AL; Curtin, B; Demura, S; Dunsworth, A; Erickson, C; Fatemi, R; Burgos, LF; Forati, E; Foxen, B; Giang, W; Giustina, M; Grajales Dau, A; Hamilton, MC; Harrington, SD; Hilton, J; Hoffmann, M; Hong, S; Huang, T; Huff, A; Iveland, J; Jeffrey, E; Kieferová, M; Kim, S; Klimov, PV; Kostritsa, F; Kreikebaum, JM; Landhuis, D; Laptev, P; Laws, L; Lee, K; Lester, BJ; Lill, A; Liu, W; Locharla, A; Lucero, E; McCourt, T; McEwen, M; Mi, X; Miao, KC; Montazeri, S; Morvan, A; Neeley, M; Neill, C; Nersisyan, A; Ng, JH; Nguyen, A; Nguyen, M; Potter, R; Quintana, C; Roushan, P; Sankaragomathi, K; Satzinger, KJ; Schuster, C; Shearn, MJ; Shorter, A; Shvarts, V; Skruzny, J; Smith, WC; Szalay, M; Torres, A; Woo, BWK; Yao, ZJ; Yeh, P; Yoo, J; Young, G; Zhu, N; Zobrist, N; Chen, Y; Megrant, A; Kelly, J; Naaman, O

Readout of a quantum processor with high dynamic range Josephson parametric amplifiers

White, T Opremcak, A Sterling, G Korotkov, A Sank, D Acharya, R Ansmann, M Arute, F Arya, K Bardin, JC Bengtsson, A Bourassa, A Bovaird, J Brill, L Buckley, BB Buell, DA Burger, T Burkett, B Bushnell, N Chen, Z Chiaro, B Cogan, J Collins, R Crook, AL Curtin, B Demura, S Dunsworth, A Erickson, C Fatemi, R Burgos, LF Forati, E Foxen, B Giang, W Giustina, M Grajales Dau, A Hamilton, MC Harrington, SD Hilton, J Hoffmann, M Hong, S Huang, T Huff, A Iveland, J Jeffrey, E Kieferová, M Kim, S Klimov, PV Kostritsa, F Kreikebaum, JM Landhuis, D Laptev, P Laws, L Lee, K Lester, BJ Lill, A Liu, W Locharla, A Lucero, E McCourt, T McEwen, M Mi, X Miao, KC Montazeri, S Morvan, A Neeley, M Neill, C Nersisyan, A Ng, JH Nguyen, A Nguyen, M Potter, R Quintana, C Roushan, P Sankaragomathi, K Satzinger, KJ Schuster, C Shearn, MJ Shorter, A Shvarts, V Skruzny, J Smith, WC Szalay, M Torres, A Woo, BWK Yao, ZJ Yeh, P Yoo, J Young, G Zhu, N Zobrist, N Chen, Y Megrant, A Kelly, J Naaman, O

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Publisher:: AIP Publishing
Publication Type:: Journal Article
Citation:: Applied Physics Letters, 2023, 122, (1)
Issue Date:: 2023-01-02

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Field	Value	Language
dc.contributor.author	White, T
dc.contributor.author	Opremcak, A
dc.contributor.author	Sterling, G
dc.contributor.author	Korotkov, A
dc.contributor.author	Sank, D
dc.contributor.author	Acharya, R
dc.contributor.author	Ansmann, M
dc.contributor.author	Arute, F
dc.contributor.author	Arya, K
dc.contributor.author	Bardin, JC
dc.contributor.author	Bengtsson, A
dc.contributor.author	Bourassa, A
dc.contributor.author	Bovaird, J
dc.contributor.author	Brill, L
dc.contributor.author	Buckley, BB
dc.contributor.author	Buell, DA
dc.contributor.author	Burger, T
dc.contributor.author	Burkett, B
dc.contributor.author	Bushnell, N
dc.contributor.author	Chen, Z
dc.contributor.author	Chiaro, B
dc.contributor.author	Cogan, J
dc.contributor.author	Collins, R
dc.contributor.author	Crook, AL
dc.contributor.author	Curtin, B
dc.contributor.author	Demura, S
dc.contributor.author	Dunsworth, A
dc.contributor.author	Erickson, C
dc.contributor.author	Fatemi, R
dc.contributor.author	Burgos, LF
dc.contributor.author	Forati, E
dc.contributor.author	Foxen, B
dc.contributor.author	Giang, W
dc.contributor.author	Giustina, M
dc.contributor.author	Grajales Dau, A
dc.contributor.author	Hamilton, MC
dc.contributor.author	Harrington, SD
dc.contributor.author	Hilton, J
dc.contributor.author	Hoffmann, M
dc.contributor.author	Hong, S
dc.contributor.author	Huang, T
dc.contributor.author	Huff, A
dc.contributor.author	Iveland, J
dc.contributor.author	Jeffrey, E
dc.contributor.author	Kieferová, M
dc.contributor.author	Kim, S
dc.contributor.author	Klimov, PV
dc.contributor.author	Kostritsa, F
dc.contributor.author	Kreikebaum, JM
dc.contributor.author	Landhuis, D
dc.contributor.author	Laptev, P
dc.contributor.author	Laws, L
dc.contributor.author	Lee, K
dc.contributor.author	Lester, BJ
dc.contributor.author	Lill, A
dc.contributor.author	Liu, W
dc.contributor.author	Locharla, A
dc.contributor.author	Lucero, E
dc.contributor.author	McCourt, T
dc.contributor.author	McEwen, M
dc.contributor.author	Mi, X
dc.contributor.author	Miao, KC
dc.contributor.author	Montazeri, S
dc.contributor.author	Morvan, A
dc.contributor.author	Neeley, M
dc.contributor.author	Neill, C
dc.contributor.author	Nersisyan, A
dc.contributor.author	Ng, JH
dc.contributor.author	Nguyen, A
dc.contributor.author	Nguyen, M
dc.contributor.author	Potter, R
dc.contributor.author	Quintana, C
dc.contributor.author	Roushan, P
dc.contributor.author	Sankaragomathi, K
dc.contributor.author	Satzinger, KJ
dc.contributor.author	Schuster, C
dc.contributor.author	Shearn, MJ
dc.contributor.author	Shorter, A
dc.contributor.author	Shvarts, V
dc.contributor.author	Skruzny, J
dc.contributor.author	Smith, WC
dc.contributor.author	Szalay, M
dc.contributor.author	Torres, A
dc.contributor.author	Woo, BWK
dc.contributor.author	Yao, ZJ
dc.contributor.author	Yeh, P
dc.contributor.author	Yoo, J
dc.contributor.author	Young, G
dc.contributor.author	Zhu, N
dc.contributor.author	Zobrist, N
dc.contributor.author	Chen, Y
dc.contributor.author	Megrant, A
dc.contributor.author	Kelly, J
dc.contributor.author	Naaman, O
dc.date.accessioned	2024-03-06T02:20:46Z
dc.date.available	2024-03-06T02:20:46Z
dc.date.issued	2023-01-02
dc.identifier.citation	Applied Physics Letters, 2023, 122, (1)
dc.identifier.issn	0003-6951
dc.identifier.issn	1077-3118
dc.identifier.uri	http://hdl.handle.net/10453/176183
dc.description.abstract	We demonstrate a high dynamic range Josephson parametric amplifier (JPA) in which the active nonlinear element is implemented using an array of rf-SQUIDs. The device is matched to the 50 ω environment with a Klopfenstein-taper impedance transformer and achieves a bandwidth of 250-300 MHz with input saturation powers up to -95 dBm at 20 dB gain. A 54-qubit Sycamore processor was used to benchmark these devices, providing a calibration for readout power, an estimation of amplifier added noise, and a platform for comparison against standard impedance matched parametric amplifiers with a single dc-SQUID. We find that the high power rf-SQUID array design has no adverse effect on system noise, readout fidelity, or qubit dephasing, and we estimate an upper bound on amplifier added noise at 1.6 times the quantum limit. Finally, amplifiers with this design show no degradation in readout fidelity due to gain compression, which can occur in multi-tone multiplexed readout with traditional JPAs.
dc.language	English
dc.publisher	AIP Publishing
dc.relation.ispartof	Applied Physics Letters
dc.relation.isbasedon	10.1063/5.0127375
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	02 Physical Sciences, 09 Engineering, 10 Technology
dc.subject.classification	Applied Physics
dc.subject.classification	40 Engineering
dc.subject.classification	51 Physical sciences
dc.title	Readout of a quantum processor with high dynamic range Josephson parametric amplifiers
dc.type	Journal Article
utslib.citation.volume	122
utslib.for	02 Physical Sciences
utslib.for	09 Engineering
utslib.for	10 Technology
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Strength - QSI - Centre for Quantum Software and Information
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Computer Science
utslib.copyright.status	closed_access	*
dc.date.updated	2024-03-06T02:20:44Z
pubs.issue	1
pubs.publication-status	Published
pubs.volume	122
utslib.citation.issue	1

Abstract:

We demonstrate a high dynamic range Josephson parametric amplifier (JPA) in which the active nonlinear element is implemented using an array of rf-SQUIDs. The device is matched to the 50 ω environment with a Klopfenstein-taper impedance transformer and achieves a bandwidth of 250-300 MHz with input saturation powers up to -95 dBm at 20 dB gain. A 54-qubit Sycamore processor was used to benchmark these devices, providing a calibration for readout power, an estimation of amplifier added noise, and a platform for comparison against standard impedance matched parametric amplifiers with a single dc-SQUID. We find that the high power rf-SQUID array design has no adverse effect on system noise, readout fidelity, or qubit dephasing, and we estimate an upper bound on amplifier added noise at 1.6 times the quantum limit. Finally, amplifiers with this design show no degradation in readout fidelity due to gain compression, which can occur in multi-tone multiplexed readout with traditional JPAs.

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http://hdl.handle.net/10453/176183