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Highly Controllable Qubit-Bath Coupling Based on a Sequence of Resonators
Mesoscale and Nanoscale Physics · Submitted 17 Apr 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim The model establishes a strong coupling to a low-temperature environment which enables us to lower the effective qubit temperature making ground state initialization more efficient.
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The abstract, sentence by sentence
Combating the detrimental effects of noise remains a major challenge in realizing a scalable quantum computer. To help to address this challenge, we introduce a model realizing a controllable qubit-bath coupling using a sequence of LC resonators. The model establishes a strong coupling to a low-temperature environment which enables us to lower the effective qubit temperature making ground state initialization more efficient. The operating principle is similar to that of a recently proposed coplanar-waveguide cavity (CPW) system, for which our work introduces a complementary and convenient experimental realization. The lumped-element model utilized here provides an easily accessible theoretical description. We present analytical solutions for some experimentally feasible parameter regimes and study the control mechanism. Finally, we introduce a mapping between our model and the recent CPW system.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Combating the detrimental effects of noise remains a major challenge in realizing a scalable quantum computer. | background 1.00 | 0.04 | 0.03 | asserted 1.00 |
| s1 | To help to address this challenge, we introduce a model realizing a controllable qubit-bath coupling using a sequence of LC resonators. | contribution 0.98 | 0.91 | 0.15 | asserted 1.00 |
| s2 | The model establishes a strong coupling to a low-temperature environment which enables us to lower the effective qubit temperature making ground state initialization more efficient. | result 0.65 | 0.72 | 0.43 | asserted 1.00 |
| s3 | The operating principle is similar to that of a recently proposed coplanar-waveguide cavity (CPW) system, for which our work introduces a complementary and convenient experimental realization. | background 0.53 | 0.52 | 0.08 | asserted 0.99 |
| s4 | The lumped-element model utilized here provides an easily accessible theoretical description. | method 0.95 | 0.69 | 0.03 | asserted 1.00 |
| s5 | We present analytical solutions for some experimentally feasible parameter regimes and study the control mechanism. | contribution 0.75 | 0.95 | 0.08 | asserted 1.00 |
| s6 | Finally, we introduce a mapping between our model and the recent CPW system. | contribution 0.97 | 0.91 | 0.11 | asserted 0.99 |
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Original abstract
Combating the detrimental effects of noise remains a major challenge in realizing a scalable quantum computer. To help to address this challenge, we introduce a model realizing a controllable qubit-bath coupling using a sequence of LC resonators. The model establishes a strong coupling to a low-temperature environment which enables us to lower the effective qubit temperature making ground state initialization more efficient. The operating principle is similar to that of a recently proposed coplanar-waveguide cavity (CPW) system, for which our work introduces a complementary and convenient experimental realization. The lumped-element model utilized here provides an easily accessible theoretical description. We present analytical solutions for some experimentally feasible parameter regimes and study the control mechanism. Finally, we introduce a mapping between our model and the recent CPW system.
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A similar operating principle was also recently studied for a system utilizing coupled LC resonators [ref] complementing our results.
Tunable electromagnetic environment for superconducting quantum bits · Introduction · 0.93
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