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Control over the interaction between single photons and individual optical emitters is an outstanding problem in quantum science and engineering. It is of interest for ultimate control over light quanta, as well as for potential applications such as efficient photon collection, single-photon switching and transistors, and long-range optical coupling of… (More)
Hybrid quantum devices, in which dissimilar quantum systems are combined in order to attain qualities not available with either system alone, may enable far-reaching control in quantum measurement, sensing, and information processing. A paradigmatic example is trapped ultracold atoms, which offer excellent quantum coherent properties, coupled to nanoscale… (More)
We demonstrate an all-optical method for magnetic sensing of individual molecules in ambient conditions at room temperature. Our approach is based on shallow nitrogen-vacancy (NV) centers near the surface of a diamond crystal, which we use to detect single paramagnetic molecules covalently attached to the diamond surface. The manipulation and readout of the… (More)
Financial literacy is a critical determinant of household well-being. We use an agent-based modelling approach to analyse the impacts of financial literacy programs delivered from sources of varying degrees of credibility through a social network in emerging economies. The simulation results indicate that the social networks of emerging markets rely heavily… (More)
This paper shows that the probability of exercise of convertible bonds issued against a firm's stock directly affects the liquidity of the stock itself. Using the ratio of absolute stock return to its dollar volume as a proxy for stock liquidity I demonstrate that there is a direct and positive relationship between conversion probability and stock liquidity… (More)
This paper examines the pricing and performance of initial public offerings (IPOs) for small-and-medium-sized enterprises on the Thai Market for Alternative Investments (mai) from September 2001 to October 2008. Underpricing is calculated using headline underpricing, underpricing issuer loss, underpricing loss by market value, and underpricing loss by… (More)
We demonstrate laser slowing of a hot thulium atomic beam using the nearly closed cycling transition 4f(13)6s(2)((2)F(o))(J=7/2)<-->4f(12)((3)H(5))5d(3/2)6s(2)(J=9/2) at 410.6 nm. Atoms are decelerated to velocities around 25 m/s by a 40 cm Zeeman slower. The flux of slowed atoms is evaluated as 10(7) s(-1)cm(-2). The experiment explicitly indicates the… (More)
We demonstrate fiber-optic magnetometry using a random ensemble of nitrogen-vacancy (NV) centers in nanodiamond coupled to a tapered optical fiber, which provides a waveguide delivery of optical fields for the initialization, polarization, and readout of the electron spin in NV centers.
W W a a r r s s a a w w , , 2 2 0 0 0 0 1 1 Materials published here have a working paper character. They can be subject to further publication. The views and opinions expressed here reflect Authors' point of view and not necessarily those of CASE.
We have studied possible candidates for laser cooling transitions in 169 Tm in the spectral region 410 – 420 nm. By means of saturation absorption spectroscopy we have measured the hyperfine structure and rates of two nearly closed cycling transitions from the ground state 4f 13 6s 2 (2 F 0)(J g = 7/2) to upper states 4f 12 (3 H 5)5d 3/2 6s 2 (J e = 9/2) at… (More)