154 citations · 624 across the 31 of their papers we have counts for
19 papers · 1 filter
Chiral light from an emitter coupled to an achiral particle via the Purcell effect
Yining Xuan, Daito Miyazaki, Yuki Ishikawa +1
We demonstrate that non-chiral nanoparticles can produce chiral light when point emitters are coupled to their surface plasmon modes (SPMs) under certain conditions. Chiral emissio…
Detecting entanglement between quantum emitters using directional emission
Ivan Saychenko, Robert Weiss, Rita Veilande +3
Recently, it was shown that quantum interference in a system containing a polarized and unpolarized emitter can allow directional emission of photons into a circulating cavity. Her…
Single-photon generation from a neodymium ion in optical fiber at room temperature
Kaito Shimizu, Kai Inoue, Kazutaka Katsumata +3
The realization of single-photon generation is important for implementing various quantum information technologies. The use of rare-earth ions in an optical fiber is a promising si…
Room-temperature addressing of single rare-earth atoms in optical fiber
Mikio Takezawa, Ryota Suzuki, Junichi Takahashi +6
Rare-earth (RE) atoms in solid-state materials are attractive components for photonic quantum information systems because of their coherence properties even in high-temperature env…
Position-controlled trapping of nanoparticles and quantum dots on a fiber taper
Ryusei Watanabe, Daiki Yamamoto, Mark Sadgrove
We investigate numerically and experimentally the properties of a two color optical fiber taper trap, for which the evanescent field of the modes in the fiber taper give rise to a…
Plasmon-enhanced polarized single photon source directly coupled to an optical fiber
Masakazu Sugawara, Yining Xuan, Yasuyoshi Mitsumori +2
A bright source of fiber-coupled, polarized single photons is an essential component of any realistic quantum network based on today's existing fiber infrastructure. Here, we devel…
Interference-induced directional emission from an unpolarized two level emitter into a circulating cavity
Lucas Ostrowski, Scott Parkins, Morito Shirane +1
Chiral coupling between quantum emitters and evanescent fields allows directional emission into nanophotonic devices and is now considered to be a vital ingredient for the realizat…
Probing local density of states near the diffraction limit using nanowaveguide coupled cathode luminescence
Yoshinori Uemura, Masaru Irita, Yoshikazu Homma +1
The photonic local density of states (PLDOS) determines the light matter interaction strength in nanophotonic devices. For standard dielectric devices, the PLDOS is fundamentally l…
Optically induced sieve effect for nanoparticles near a nanofiber taper
Mark Sadgrove, Takaaki Yoshino, Masakazu Sugawara +2
We demonstrate size selective optical trapping and transport for nanoparticles near an optical nanofiber taper. Using a two-wavelength, counter-propagating mode configuration, we s…
Hamiltonian ratchets with ultra-cold atoms
Jiating Ni, Siamak Dadras, Wa Kun Lam +4
Quantum-resonance ratchets have been realized over the last ten years for the production of directed currents of atoms. These non-dissipative systems are based on the interaction o…
Composite device for interfacing an array of atoms with a single nanophotonic cavity mode
Mark Sadgrove, Kali P. Nayak
We propose a method of trapping atoms in arrays near to the surface of a composite nanophotonic device with optimal coupling to a single cavity mode. The device, comprised of a nan…
Scaling law and stability for a noisy quantum system
Mark Sadgrove, Sandro Wimberger, Scott Parkins +1
We show that a scaling law exists for the near resonant dynamics of cold kicked atoms in the presence of a randomly fluctuating pulse amplitude. Analysis of a quasi-classical phase…
Rectified momentum transport for a kicked Bose-Einstein Condensate
Mark Sadgrove, Munekazu Horikoshi, Tetsuo Sekimura +1
We report the experimental observation of rectified momentum transport for a Bose-Einstein Condensate kicked at the Talbot time (quantum resonance) by an optical standing wave. Ato…
Ballistic and localized transport for the atom optics kicked rotor in the limit of vanishing kicking period
Mark Sadgrove, Sandro Wimberger, Scott Parkins +1
We present mean energy measurements for the atom optics kicked rotor as the kicking period tends to zero. A narrow resonance is observed marked by quadratic energy growth, in paral…
Atom optics kicked rotor: experimental evidence for a pendulum description of the quantum resonance
S. Wayper, M. Sadgrove, W. Simpson +1
We present measurements of the mean energy for an atom optics kicked rotor ensemble close to quantum resonance. Oscillations in the mean energy in this regime are are shown to be i…
Quantum and Classical Effects in the Two-Frequency Kicked Rotor with Variable Initial Phase
T. G. Mullins, A. J. Hilliard, M. P. Sadgrove +3
We present an investigation into effects exhibited by the two-frequency kicked rotor. Experiments were performed and in addition quantum and classical dynamics were simulated and c…
Deviations from early--time quasilinear behaviour for the quantum kicked rotor near the classical limit
Mark Sadgrove, Terry Mullins, Scott Parkins +1
We present experimental measurements of the mean energy for the atom optics kicked rotor after just two kicks. The energy is found to deviate from the quasi--linear value for small…
Observation of Robust Quantum Resonance Peaks in an Atom Optics Kicked Rotor with Amplitude Noise
Mark Sadgrove, Andrew Hilliard, Terry Mullins +2
The effect of pulse train noise on the quantum resonance peaks of the Atom Optics Kicked Rotor is investigated experimentally. Quantum resonance peaks in the late time mean energy…
Measurements of Diffusion Resonances for the Atom Optics Quantum Kicked Rotor
M. E. K. Williams, M. P. Sadgrove, A. J. Daley +5
We present experimental observations of diffusion resonances for the quantum kicked rotor with weak decoherence. Cold caesium atoms are subject to a pulsed standing wave of near-re…