Advances in quantum control of three-level superconducting circuit architectures

Abstract

Advanced control in Lambda ($\Lambda$) scheme of a solid state architecture of artificial atoms and quantized modes would allow the translation to the solid-state realm of a whole class of phenomena from quantum optics, thus exploiting new physics emerging in larger integrated quantum networks and for stronger couplings. However control solid-state devices has constraints coming from selection rules, due to symmetries which on the other hand yield protection from decoherence, and from design issues, for instance that coupling to microwave cavities is not directly switchable. We present two new schemes for the $\Lambda$-STIRAP control problem with the constraint of one or two classical driving fields being always-on. We show how these protocols are converted to apply to circuit-QED architectures. We finally illustrate an application to coherent spectroscopy of the so called ultrastrong atom-cavity coupling regime.

9 pages, 5 figures. Received 27 June 2016, accepted 23 September 2016

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• Roadmap on STIRAP applications
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• Ultrastrong coupling probed by Coherent Population Transfer
• Detecting virtual photons in ultrastrongly coupled superconducting quantum circuits
• Optimal quantum control via genetic algorithms for quantum state engineering in driven-resonator mediated networks
• Majorana representation of adiabatic and superadiabatic processes in three-level systems
• Long-lived entanglement of two multilevel atoms in a waveguide
• Population transfer via a dissipative structural continuum
• Atoms in separated resonators can jointly absorb a single photon
• Photon pair production by STIRAP in ultrastrongly coupled matter-radiation systems
• Probing Ultrastrong Light-Matter Coupling in Open Quantum Systems
• Perfect stimulated Raman adiabatic passage with imperfect finite-time pulses
• Integrated conversion and photodetection of virtual photons in an ultrastrongly coupled superconducting quantum circuit
• Coherent trapping in small quantum networks
• Low-frequency critical current noise in graphene Josephson junctions in the open-circuit gate voltage limit
• Coarse-grained effective Hamiltonian via the Magnus Expansion for a three-level system
• Population trapping in the excited states using vacuum-induced coherence and adiabatic process
• Selective decoupling in multi-level quantum systems by the SU(2) sign anomaly
• Channel capacity of small modular quantum networks in the ultrastrongly coupled regime
• Cross-coupling effects in circuit-QED stimulated Raman adiabatic passage
• Quantum process tomography of adiabatic and superadiabatic stimulated Raman passage
• Spontaneous Scattering of Raman Photons from Cavity-QED Systems in the Ultrastrong Coupling Regime