Coherent control of magnon radiative damping with local photon states

AbstractA magnon, the collective excitation of ordered spins, can spontaneously radiate a travelling photon to an open system when decaying to the ground state. However, in contrast to electric dipoles, magnetic dipoles by magnons are more isolated from the environment, limiting their radiation and coherent communication with photons. The recent progresses in strongly coupled magnon-photon system have stimulated the manipulation of magnon radiation via tailoring the photon states. Here, by loading an yttrium iron garnet sphere in a one-dimensional waveguide cavity supporting both the travelling and standing photon modes, we demonstrate a significant magnon radiative damping that is proportional to the local density of photon states (LDOS). By modulating the magnitude and/or polarization of LDOS, we can flexibly tune the photon emission and magnon radiative damping. Our findings provide a way to manipulate photon emission from magnon radiation, which could help harness angular momentum generation, transfer, and storage in magnonics.

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PHOTON EMISSION FROM TRANSITION METAL SURFACES IN SCANNING TUNNELING MICROSCOPY

International Journal of Modern Physics B ◽

10.1142/s0217979293001086 ◽

1993 ◽

Vol 07 (01n03) ◽

pp. 516-519 ◽

Cited By ~ 3

Author(s):

RICHARD BERNDT ◽

JAMES K. GIMZEWSKI

Keyword(s):

Scanning Tunneling Microscope ◽

Metal Surfaces ◽

Light Emission ◽

Local Density ◽

Photon Emission ◽

Scanning Tunneling ◽

Local Density Of States ◽

Tunneling Microscopy ◽

Photon Intensity ◽

Plasmon Modes

Light emission from noble metal surfaces excited by a scanning tunneling microscope has been interpreted as arising from in elastic tunneling excitation of tip-induced plasmon modes. We have extended this work to study the adsorption of oxygen on Ti and have observed the formation of structures with subnanometer lateral dimensions which give rise to clear contrasts in STM topographs and photon intensity maps. The experimental results strongly indicate that these contrasts are due to oxygen-induced variations of the local density of states.

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Controlled single-photon emission from a strongly coupled atom-cavity system

Conference Digest. 2000 International Quantum Electronics Conference (Cat. No.00TH8504) ◽

10.1109/iqec.2000.908067 ◽

2005 ◽

Author(s):

A. Kuhn ◽

M. Hennrich ◽

T. Legero ◽

G. Rempe

Keyword(s):

Single Photon ◽

Photon Emission ◽

Single Photon Emission ◽

Strongly Coupled ◽

Cavity System

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Electric dipoles vs. magnetic dipoles —For two molecules in a harmonic trap

EPL (Europhysics Letters) ◽

10.1209/0295-5075/118/66002 ◽

2017 ◽

Vol 118 (6) ◽

pp. 66002 ◽

Cited By ~ 1

Author(s):

Wojciech Górecki ◽

Kazimierz Rzążewski

Keyword(s):

Harmonic Trap ◽

Magnetic Dipoles ◽

Electric Dipoles

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Coherent control of energy transfer in a quantum dot strongly coupled to a photonic crystal molecule

10.1117/12.2078199 ◽

2015 ◽

Author(s):

Tao Cai ◽

Ranojoy Bose ◽

Kaushik R. Choudhury ◽

Glenn S. Solomon ◽

Edo Waks

Keyword(s):

Energy Transfer ◽

Photonic Crystal ◽

Quantum Dot ◽

Coherent Control ◽

Strongly Coupled

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Equations of motion of the restricted problem of (2 + 2) bodies when primaries are magnetic dipoles and minor bodies are taken as electric dipoles

Celestial Mechanics and Dynamical Astronomy ◽

10.1007/bf00054550 ◽

1996 ◽

Vol 64 (4) ◽

pp. 305-312 ◽

Cited By ~ 1

Author(s):

A. Prasad ◽

Bhola Ishwar

Keyword(s):

Restricted Problem ◽

Equations Of Motion ◽

Magnetic Dipoles ◽

Electric Dipoles

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Complete Coherent Control of a Strongly Coupled Quantum Dot-Cavity Polariton System

Conference on Lasers and Electro-Optics ◽

10.1364/cleo_qels.2016.ftu1d.2 ◽

2016 ◽

Author(s):

Constantin Dory ◽

Kevin A. Fischer ◽

Kai Müller ◽

Konstantinos G. Lagoudakis ◽

Tomas Sarmiento ◽

...

Keyword(s):

Quantum Dot ◽

Coherent Control ◽

Strongly Coupled

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A study of downhole electromagnetic sources for mapping enhanced oil recovery processes

Geophysics ◽

10.1190/1.1443614 ◽

1994 ◽

Vol 59 (4) ◽

pp. 534-545 ◽

Cited By ~ 4

Author(s):

Gregory A. Newman

Keyword(s):

Enhanced Oil Recovery ◽

Oil Recovery ◽

Magnetic Dipoles ◽

Instrumental Noise ◽

Recovery Processes ◽

Before And After ◽

Order Of Magnitude ◽

Electric Dipoles ◽

Eor Processes ◽

Electric Source

An evaluation of downhole electromagnetic (EM) sources has been made for mapping 3-D enhanced oil recovery (EOR) processes. Two types of sources considered were vertical magnetic dipoles and vertical to near‐vertical electric dipoles and bipoles. These sources were used to produce magnetic field responses expected of EOR processes for crosswell configurations. A borehole‐to‐surface configuration was also studied for the downhole electric source, since this configuration can be highly sensitive to shallow 3-D EOR targets. For the crosswell arrays, the criteria used to evaluate the sources were the magnitudes of the observed signals with and without the process and the amount these signals change because of a migrating process. Instrumental noise was considered in the evaluation. Findings show that either electric or magnetic sources can produce truly significant changes in the fields, provided the fields before and after the initiation of the process are compared. An order of magnitude change in the fields has been demonstrated. The key to measuring such changes is to use the highest frequency possible. This frequency will be limited by instrumental noise. A migrating process did not produce field changes that are as large as those observed with and without the process. Nevertheless, model simulations showed that changes in the fields caused by the migrating processes are significant and measurable. Calculated responses of a shallow process at the surface showed that they were extremely sensitive to small deviations in the orientation of the downhole electric source. Quantitative interpretation should proceed only with techniques that explicitly consider the source orientation.

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