Earl T. Campbell; Barbara M. Terhal; Christophe Vuillot
2017-09-13 (online)
Nature (Nature). 549, 7671, 172-179. doi:10.1038/nature23460
Superconducting qubits 2013-superconducting-qubit-outlook (ref. 3).
Gottesman-Knill theorem says you need T in addition to S, H, and CNOT or you get no quantum 1997-gottesman-thesis (ref. 9) (ref. 10).
Trivial codes can't have transversal implementations of all gates for universal compuation (ref. 11) (ref. 12).
Surface code first as a topological memory 2002-surface-code (ref. 13). Logical qubit can be two holes in a code sheet (ref. 17) or two pairs of latice defects or twists (ref. 18) (ref. 19).
Show References| Num | Entry | Why |
|---|---|---|
| 13 | 2002-surface-code | "Seminal paper on using the surface code as a quantum memory" |
| 3 | 2013-superconducting-qubit-outlook | |
| 9 | 1997-gottesman-thesis |
Leonie Mueck
2017-09-13 (online)
Nature (Nature). 549, 7671, 171-171. doi:10.1038/549171a
Nature ran a featurette where everyone mused about quantum computing and how to make it useful. Includes 2017-fault-tolerant-computation, 2017-quantum-programming-language,
Frederic T. Chong; Diana Franklin; Margaret Martonosi
2017-09-13 (online)
Nature (Nature). 549, 7671, 180-187. doi:10.1038/nature23459
Quantum/classical co-processor model described by 2015-quipper (ref. 19).
Show References| Num | Entry | Why |
|---|---|---|
| 18 | 2016-h2-vqe | "This paper is a good example of the emerging importance of classical-quantum co-processing" |
| 19 | 2015-quipper | "This paper offers another perspective on quantum programming language design issues." |
| 47 | 2016-quil | "QUIL - A new language with an emphasis on the classical-quantum interface. Open source." |
Will Zeng; Blake Johnson; Robert Smith; Nick Rubin; Matt Reagor; Colm Ryan; Chad Rigetti
2017-09-13 (online)
Nature (Nature). 549, 7671, 149-151. doi:10.1038/549149a
A comment that argues for good quantum software.
Eyob A. Sete; Matthew J. Reagor; Nicolas Didier; Chad T. Rigetti
2017-08-07 (online)
Physical Review Applied (Physical Review Applied). 8, 2, doi:10.1103/PhysRevApplied.8.024004
Improve fluxonimum (ref. 10) (ref. 11) (ref. 12) (ref. 13) (ref. 14) (ref. 15) with "sweet spots". I think this is just simulations of how it would behave w.r.t noise though.
Static qubit-qubit couplings with 2q-gates in hundreds of nanoseconds, 100us coherence, and fidelity of 99.1% (ref. 1) (ref. 2) (ref. 3).
Frequency tinable qubits: 20us coherence, 50ns 2q-gates and 99.44% fidelity (ref. 4) (ref. 5). Fluctuations from flux noise ruin coherence (ref. 6) (ref. 7) (ref. 8). Also not anharmonic enough means leaks to higher levels (ref. 9).
M. Reagor; C. B. Osborn; N. Tezak; A. Staley; G. Prawiroatmodjo; M. Scheer; N. Alidoust; E. A. Sete; N. Didier; M. P. da Silva; E. Acala; J. Angeles; A. Bestwick; M. Block; B. Bloom; A. Bradley; C. Bui; S. Caldwell; L. Capelluto; R. Chilcott; J. Cordova; G. Crossman; M. Curtis; S. Deshpande; T. El Bouayadi; D. Girshovich; S. Hong; A. Hudson; P. Karalekas; K. Kuang; M. Lenihan; R. Manenti; T. Manning; J. Marshall; Y. Mohan; W. O'Brien; J. Otterbach; A. Papageorge; J. -P. Paquette; M. Pelstring; A. Polloreno; V. Rawat; C. A. Ryan; R. Renzas; N. Rubin; D. Russell; M. Rust; D. Scarabelli; M. Selvanayagam; R. Sinclair; R. Smith; M. Suska; T. -W. To; M. Vahidpour; N. Vodrahalli; T. Whyland; K. Yadav; W. Zeng; C. T. Rigetti
2017-06-20 (online)
Eight qubits in a ring, alternating fixed and tunable. Do 2q gates.
Eyob A. Sete; William J. Zeng; Chad T. Rigetti
2016-10-01 (print)
2016 IEEE International Conference on Rebooting Computing (ICRC) (2016 IEEE International Conference on Rebooting Computing (ICRC)). doi:10.1109/ICRC.2016.7738703
Quantum simulation algorithsm (ref. 1) (ref. 2) (ref. 3).
Quantum machine learning (ref. 4)
Quantum error correction benchmarks (ref. 5) (ref. 6) (ref. 7).
Variational quantum eigensolvers (ref. 8) (ref. 9) (ref. 10).
Correlated material simulations (ref. 11).
Approximate optimization (ref. 12).
For the problems of catalysts (ref. 13) and high temperature superconductivity (ref. 9) show promise.
Cryo operation and superconducting materials means no sissipation preserving quantum coherance.
Transmon qubits have large coherence time (ref. 14). Fluxonium qubits have wide frequency tunability and strong nonlinearity (ref. 15). This means fluxonium are better for two-qubit gates.
Quantum limited amplifiers (ref. 16) (ref. 17) (ref. 18): Josephson parametric amplifier, Josephson bifurcation amplifier, and Josephson parametric converter. Non-linear resonators.
Can do rotations Rx and Ry on any qubit. Can do SWAP between any transmon and fluxonium. Can do CPhase between any fluxonium and half the transmons. All gates can be made with these primitives (ref. 19).
Introduce "TQF" estimate of width * depth of quantum circuit you can run. (ref. 1) runs electronic structure for very small molecules.
Transmon can be "data" for surface code error correction (ref. 24) (ref. 25) and fluxonium as ancillas for parity measurement.
Vedran Dunjko; Jacob M. Taylor; Hans J. Briegel
2016-09-20 (online)
Physical Review Letters (Phys. Rev. Lett.). 117, 13, doi:10.1103/PhysRevLett.117.130501
Robert S. Smith; Michael J. Curtis; William J. Zeng
2016-08-11 (online)
P. J. J. O’Malley; R. Babbush; I. D. Kivlichan; J. Romero; J. R. McClean; R. Barends; J. Kelly; P. Roushan; A. Tranter; N. Ding; B. Campbell; Y. Chen; Z. Chen; B. Chiaro; A. Dunsworth; A. G. Fowler; E. Jeffrey; E. Lucero; A. Megrant; J. Y. Mutus; M. Neeley; C. Neill; C. Quintana; D. Sank; A. Vainsencher; J. Wenner; T. C. White; P. V. Coveney; P. J. Love; H. Neven; A. Aspuru-Guzik; J. M. Martinis
2016-07-18 (online)
Physical Review X (Physical Review X). 6, 3, doi:10.1103/PhysRevX.6.031007
Solves molecular hydrogen with variational quantum eigensolver (which is hybrid quantum - classical) and compares to trotterization and quantum phase estimation. The VQE is better.
Benoît Valiron; Neil J. Ross; Peter Selinger; D. Scott Alexander; Jonathan M. Smith
2015-07-23 (print)
Communications of the ACM (Commun. ACM). 58, 8, 52-61. doi:10.1145/2699415
Quantum programming language implemented inside Haskell. Invisions quantum co-processor.
M. H. Devoret; R. J. Schoelkopf
2013-03-07 (online) – 2013-03-08 (print)
Science (Science). 339, 6124, 1169-1174. doi:10.1126/science.1231930
Eric Dennis; Alexei Kitaev; Andrew Landahl; John Preskill
2002-09-01 (print)
Journal of Mathematical Physics (J. Math. Phys.). 43, 9, 4452-4505. doi:10.1063/1.1499754
Called the seminal work in surface code error correction by 2017-fault-tolerant-computation, this long article seems to evaluate the details of the surface code which were introduced in 1997-kitaev-error-correction (ref. 4) and 1997-anyons (ref. 5).
Show References| Num | Entry | Why |
|---|---|---|
| 4 | 1997-kitaev-error-correction | |
| 5 | 1997-anyons |
A. Yu. Kitaev
1997-07-09 (online)
Daniel Gottesman
1997-05-28 (online)
A. Yu. Kitaev
1997-01-01 (print)
Quantum Communication, Computing, and Measurement (Quantum Communication, Computing, and Measurement). 181-188. doi:10.1007/978-1-4615-5923-8_19
Michel H. Devoret; John M. Martinis; John Clarke
1985-10-28 (online)
Physical Review Letters (Phys. Rev. Lett.). 55, 18, 1908-1911. doi:10.1103/PhysRevLett.55.1908