Conference Agenda

TOM8 S03: Nonlinear and Quantum Optics 3
Wednesday, 14/Sept/2022:
4:30pm - 6:00pm

Session Chair: Kamel Bencheikh, Centre of Nanoscience and Nanotechnology, C2N-CNRS, France
Location: B328

3rd floor, 32 seats

4:30pm - 5:00pm
ID: 397 / TOM8 S03: 1
TOM 8 Non-linear and Quantum Optics

Quantum networks and computations with spins in diamond.

Tim Hugo Taminiau

QuTech, Netherlands, The

Electron-nuclear spin systems based on optically active defects in diamond provide a promising platform for distributed quantum simulations and computation. In this approach, optically active defect spins are used to form multi-qubit processors that can be linked together in a network through photonic links [1,2]. Quantum error correction and computations are then distributed over the network.

In this talk I will introduce such spin-based distributed quantum computations and present our recent progress. In particular, we have recently shown that it is possible to control large numbers of nuclear spins around a single NV center [1], and to use these qubits for quantum simulations of many-body physics [3] and for encoding fault-tolerant logical qubits [4].


[1] C. E. Bradley et al., Phys. Rev. X. 9, 031045 (2019)

[2] M. Pompili et al., Science 372, 259 (2021)

[3] J. Randall et al., Science 374, 1474 (2021)

[4] M. H. Abobeih et al. Nature 606, 884 (2021)

5:00pm - 5:15pm
ID: 293 / TOM8 S03: 2
TOM 8 Non-linear and Quantum Optics

Wide-field broadband CARS microscopy

Chiara Ceconello1, Federico Vernuccio1, Alejandro De la Cadena1, Arianna Bresci1, Francesco Manetti1, Subir Das1, Renzo Vanna2, Giulio Cerullo1,2, Dario Polli1,2

1Department of Physics, Politecnico di Milano, P.zza Leonardo da Vinci 32, 20133 Milan, Italy; 2CNR Institute for photonics and nanotechnologies (IFN), P.zza Leonardo da Vinci 32, 20133 Milan, Italy

Coherent anti-Stokes Raman scattering is an extremely powerful non-linear optical (NLO) microscopy technique for label-free vibrational imaging allowing for a detailed study of biological samples in their native state. To overcome the long acquisition times associated with raster sample scanning required in NLO microscopy, which impair real-time investigation of fast biological dynamics, we employ here wide-field signal generation over a large field of view, covering tens of micrometers. To this aim, we exploit an innovative approach based on the use of an amplified femtosecond ytterbium laser source delivering high energy (≈μJ) pulses in the near infrared. This enables the generation of stable broadband Stokes pulses to measure the entire fingerprint region of the molecular vibrational spectrum, the richest in chemical information. Our results pave the way for future translational applications and clinical diagnostics with video-rate imaging capabilities.

5:15pm - 5:30pm
ID: 149 / TOM8 S03: 3
TOM 8 Non-linear and Quantum Optics

Demonstration of propagation-invariant 3D space-time wave packets

Murat Yessenov1, Justin Free2, Zhaozhong Chen3, Eric Johnson2, Martin Lavery3, Miguel Alonso4,5, Ayman Abouraddy1

1University of Central Florida, United States of America; 2Clemson University, United States of America; 3University of Glasgow, United Kingdom; 4Aix Marseille University, France; 5University of Rochester, United States of America

We present the first demonstration of propagation-invariant space-time (ST) wave packets localized in all dimensions. By introducing orbital-angular-momentum into the wave packets, we produce propagation-invariant ST-OAM wave packets traveling at arbitrary group velocities.

5:30pm - 6:00pm
ID: 196 / TOM8 S03: 4
TOM 8 Non-linear and Quantum Optics

Non-locality and single object spectroscopy in THz Landau polaritons

Giacomo Scalari1, Shima Rajabali1, Elsa Jöchl1, Sergej Markmann1, Simone De Liberato2, Erika Cortese2, Mattias Beck1, Jerome Faist1

1Insititute for Quantum Electronics, ETH Zürich, Switzerland; 2Department of Physics and Astronomy, Univ. of Southampton, UK

We will discuss, theoretically and experimentally, the existence of a limit to the possibility of arbitrarily increasing electromagnetic confinement in polaritonic systems. Strongly sub-wavelength fields can excite a continuum of high-momenta propagative magnetoplasmons. This leads to peculiar nonlocal polaritonic effects, as certain polaritonic features disappear and the system enters in the regime of discrete-to-continuum strong coupling. We will as well discuss experiments reporting spectroscopy of a single, ultrastrongly coupled, highly subwavelength resonator operating at 300 GHz.