RECORD
Top-transmon: hybrid superconducting qubit for parity-protected quantum computation
Mesoscale and Nanoscale Physics · Submitted 2 May 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Here we propose to use a superconducting charge qubit in a transmission line resonator (a socalled transmon) to perform parity-protected rotations and read-out of a topological (top) qubit.
The compiled record
The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
Open the compiled record
The abstract, sentence by sentence
Qubits constructed from uncoupled Majorana fermions are protected from decoherence, but to perform a quantum computation this topological protection needs to be broken. Parity-protected quantum computation breaks the protection in a minimally invasive way, by coupling directly to the fermion parity of the system --- irrespective of any quasiparticle excitations. Here we propose to use a superconducting charge qubit in a transmission line resonator (a socalled transmon) to perform parity-protected rotations and read-out of a topological (top) qubit. The advantage over an earlier proposal using a flux qubit is that the coupling can be switched on and off with exponential accuracy, promising a reduced sensitivity to charge noise.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Qubits constructed from uncoupled Majorana fermions are protected from decoherence, but to perform a quantum computation this topological protection needs to be broken. | background 0.99 | 0.05 | 0.06 | asserted 1.00 |
| s1 | Parity-protected quantum computation breaks the protection in a minimally invasive way, by coupling directly to the fermion parity of the system --- irrespective of any quasiparticle excitations. | background 0.94 | 0.09 | 0.13 | asserted 1.00 |
| s2 | Here we propose to use a superconducting charge qubit in a transmission line resonator (a socalled transmon) to perform parity-protected rotations and read-out of a topological (top) qubit. | contribution 0.96 | 0.24 | 0.42 | hedged possibility 0.39 |
| s3 | The advantage over an earlier proposal using a flux qubit is that the coupling can be switched on and off with exponential accuracy, promising a reduced sensitivity to charge noise. | contribution 0.47 | 0.34 | 0.13 | asserted 0.77 |
What was examined, and what was not
- arXiv listing abstract v1
- full text
- figures and tables
- references and citing sentences
- relations to other papers
- P abstract
- S sections
- T body sentences
- C citations
- R cross-paper relations
The paper
Original abstract
Qubits constructed from uncoupled Majorana fermions are protected from decoherence, but to perform a quantum computation this topological protection needs to be broken. Parity-protected quantum computation breaks the protection in a minimally invasive way, by coupling directly to the fermion parity of the system --- irrespective of any quasiparticle excitations. Here we propose to use a superconducting charge qubit in a transmission line resonator (a socalled transmon) to perform parity-protected rotations and read-out of a topological (top) qubit. The advantage over an earlier proposal using a flux qubit is that the coupling can be switched on and off with exponential accuracy, promising a reduced sensitivity to charge noise.
Human review
How later papers used it
46 later papers cite it
1 later paper by other authors is listed below: 1 used its data or values.
Uses its data or values 1 paper
-
Used this paper's typical charge-noise value of δε∼10^-3ε as a likely source of time-dependent changes in ε, noting it can be reduced to δε∼10^-6ε at the charge-insensitive sweet spot.
A geometric protocol for a robust Majorana magic gate (2015) · 0.94 · paraphrased: the licence does not allow quoting
How the literature uses it
8 arXiv papers cite this in 14 sentences
Papers citing it · 12 sentences without a confident label
Cites it as background 2 papers
-
Aside from directly probing the wire with point contacts, there have been several proposals for observing the presence of Majorana bounds states such as using the Aharanov-Casher effect, [ref] transmons, [ref] and Shapiro step doubling in the AC-Josephson effect.
Demonstrating Entanglement by Testing Bell's Theorem in Majorana Wires · Experimental Considerations · 0.83
-
Methods for accessing the encoded information were studied in [ref] .
Disorder-assisted error correction in Majorana chains · Discussion · 0.93
What it cites · 4 sentences without a confident label
Cites as background 4 papers
-
The superconducting islands have Hamiltonian $H= H_C + H_J$, containing the capacitive energy due to a charge difference of the islands and the Josephson energy due to the tunneling of Cooper pairs between the islands [ref] .
Superconducting Qubits: A Short Review · Transmon qubit · 0.95
-
There is a great variety of proposals how to implement the unprotected operations without losing phase coherence [ref] .
Observing Majorana bound states of Josephson vortices in topological superconductors · Introduction · 0.90
-
There is a great variety of proposals how to implement the unprotected operations without losing phase coherence [ref] .
Scheme to measure Majorana fermion lifetimes using a quantum dot · Introduction · 0.90
Discussion
Know something about this paper? Leave a comment, or highlight any passage above to comment on it.