Collective bosonic effects in an array of transmon devices
- URL: http://arxiv.org/abs/2112.08134v2
- Date: Wed, 22 Dec 2021 11:26:27 GMT
- Title: Collective bosonic effects in an array of transmon devices
- Authors: Tuure Orell, Maximilian Zanner, Mathieu L. Juan, Aleksei Sharafiev,
Romain Albert, Stefan Oleschko, Gerhard Kirchmair, Matti Silveri
- Abstract summary: Multiple emitters coherently interacting with an electromagnetic mode give rise to collective effects such as correlated decay and coherent exchange interaction.
By diagonalizing the effective non-Hermitian many-body Hamiltonian we reveal the complex-valued eigenvalue spectrum encoding the decay and interaction characteristics.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Multiple emitters coherently interacting with an electromagnetic mode give
rise to collective effects such as correlated decay and coherent exchange
interaction, depending on the separation of the emitters. By diagonalizing the
effective non-Hermitian many-body Hamiltonian we reveal the complex-valued
eigenvalue spectrum encoding the decay and interaction characteristics. We show
that there are significant differences in the emerging effects for an array of
interacting anharmonic oscillators compared to those of two-level systems and
harmonic oscillators. The bosonic decay rate of the most superradiant state
increases linearly as a function of the filling factor and exceeds that of
two-level systems in magnitude. Furthermore, with bosonic systems, dark states
are formed at each filling factor. These are in strong contrast with two-level
systems, where the maximal superradiance is observed at half filling and with
larger filling factors superradiance diminishes and no dark states are formed.
As an experimentally relevant setup of bosonic waveguide QED, we focus on
arrays of transmon devices embedded inside a rectangular waveguide.
Specifically, we study the setup of two transmon pairs realized experimentally
in M. Zanner et al., arXiv.2106.05623 (2021), and show that it is necessary to
consider transmons as bosonic multilevel emitters to accurately recover correct
collective effects for the higher excitation manifolds.
Related papers
- Dynamics and Resonance Fluorescence from a Superconducting Artificial Atom Doubly Driven by Quantized and Classical Fields [11.961708412157757]
Experimental demonstration of resonance fluorescence in a two-level superconducting artificial atom under two driving fields coupled to a detuned cavity.
The device consists of a transmon qubit strongly coupled to a one-dimensional transmission line and a coplanar waveguide resonator.
arXiv Detail & Related papers (2024-03-17T08:48:30Z) - The role of polaron dressing in superradiant emission dynamics [0.0]
We show how polaron dressing affects collective photon emission by mixing bright and dark Dicke states.
Our numerical simulations show that this mixing crucially depends on the circumstances of the excitation of the system.
arXiv Detail & Related papers (2024-03-08T18:57:08Z) - Dissipative stabilization of maximal entanglement between non-identical
emitters via two-photon excitation [49.1574468325115]
Two non-identical quantum emitters, when placed within a cavity and coherently excited at the two-photon resonance, can reach stationary states of nearly maximal entanglement.
We show that this mechanism is merely one among a complex family of phenomena that can generate both stationary and metastable entanglement when driving the emitters at the two-photon resonance.
arXiv Detail & Related papers (2023-06-09T16:49:55Z) - Observation of superradiant bursts in a cascaded quantum system [0.0]
Dicke superradiance describes the collective radiative decay of a fully inverted ensemble of two-level atoms.
We experimentally investigate this effect for a chiral, i.e.,direction-dependent light--matter coupling.
Our results shed light on the collective radiative dynamics of cascaded quantum many-body systems.
arXiv Detail & Related papers (2022-11-16T14:36:10Z) - Dicke superradiance requires interactions beyond nearest-neighbors [0.0]
Superradiant burst is most commonly observed in systems with long-range interactions between the emitters.
We show that Dicke superradiance requires minimally the inclusion of next-nearest-neighbor interactions.
Our findings provide key physical insights to the understanding of collective decay in many-body quantum systems.
arXiv Detail & Related papers (2022-11-01T18:01:15Z) - Tailoring population transfer between two hyperfine ground states of
Rb87 [49.1574468325115]
We investigate the coherent control over a complex multi-level atomic system using the stimulated Raman adiabatic passage (STIRAP)
We demonstrate the ability to decompose the system into three- and four-level subsystems independently interacting with light beams.
arXiv Detail & Related papers (2022-10-21T14:57:21Z) - Reminiscence of classical chaos in driven transmons [117.851325578242]
We show that even off-resonant drives can cause strong modifications to the structure of the transmon spectrum rendering a large part of it chaotic.
Results lead to a photon number threshold characterizing the appearance of chaos-induced quantum demolition effects.
arXiv Detail & Related papers (2022-07-19T16:04:46Z) - Formation of robust bound states of interacting microwave photons [148.37607455646454]
One of the hallmarks of interacting systems is the formation of multi-particle bound states.
We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model.
By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
arXiv Detail & Related papers (2022-06-10T17:52:29Z) - Generalization of the Tavis-Cummings model for multi-level anharmonic
systems: insights on the second excitation manifold [0.0]
This work contrasts predictions from the Tavis-Cummings (TC) model, in which the material is a collection of two-level systems.
We simplify the brute-force diagonalization of a gigantic $N2times N2$ Hamiltonian.
We find resonant conditions between bipolaritons and anharmonic transitions where two-photon absorption can be enhanced.
arXiv Detail & Related papers (2022-02-03T06:33:42Z) - Tunable Anderson Localization of Dark States [146.2730735143614]
We experimentally study Anderson localization in a superconducting waveguide quantum electrodynamics system.
We observe an exponential suppression of the transmission coefficient in the vicinity of its subradiant dark modes.
The experiment opens the door to the study of various localization phenomena on a new platform.
arXiv Detail & Related papers (2021-05-25T07:52:52Z) - Collective radiation from distant emitters [63.391402501241195]
We show that the spectrum of the radiated field exhibits non-Markovian features such as linewidth broadening beyond standard superradiance.
We discuss a proof-of-concept implementation of our results in a superconducting circuit platform.
arXiv Detail & Related papers (2020-06-22T19:03:52Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.