Generation of Dicke States with Phonon-Mediated Multi-level Stimulated Raman Adiabatic Passage

We generate half-excited symmetric Dicke states of two and four ions. We use multi-level stimulated Raman adiabatic passage (STIRAP) whose intermediate states are phonon Fock states. This process corresponds to the spin squeezing operation and half-excited Dicke states are generated during multi-level STIRAP. This method does not require local access for each ion or the preparation of phonon Fock states. Furthermore, it is robust since it is an adiabatic process. We evaluate the Dicke state using a witness operator and determine the upper and lower bounds of the fidelity without using full quantum tomography.Comment: 5pages, 4 figure

Generation of a decoherence-free entangled state using a radio frequency dressed state

We propose the generation of entangled states with trapped calcium ions using a combination of an rf dressed state and a spin dependent force. Using this method, a decoherence-free entangled state of rf qubits can be directly generated and ideally its fidelity is close to unity. We demonstrate an rf entangled state with a fidelity of 0.68, which has a coherence time of more than 200 ms by virtue of the fact that it is an eigenstate with energy gaps between adjacent levels.Using the same technique, we also produce a qutrit-qutrit entangled state with a fidelity of 0.77, which exceeds the threshold value for separability of 2/3.Comment: 4 figure

Disclosure Writing with the Use of Manipulating Writing Instructions: A Disclosure Writing Study

It is well known that writing about traumatic life events has both physical and psychological long term benefits. James Pennebaker and his colleagues (Pennebaker, Mayne, & Francis, 1997; Pennebaker & Seagal, 1999) suggested that both negative and positive disclosure writing instructions could be useful in understanding positive life events, not only the negative life events. The purpose of this study is to experimentally investigate the order in which participants write about their positive or negative perspectives of life events through an expressive writing paradigm and manipulate the order of instructions that includes negative-only expression, negative to positive expression, positive negative expression, and neutral writing expression. It is hypothesized that writing about negative events then positive events could allow for a greater increase in positive affect, in contrast to writing about strictly negative events or strictly positive events. Once individuals have written about a negative topic then a positive topic, it could help make individuals gain an understanding about a negative event and view positive events with great meaning, without allowing for rumination and negative mood. Undergraduate students were instructed to complete a writing task for fifteen minutes for two days. Follow up evaluations were administered two weeks after the second writing task, asking participants to rate their meaning in life, their health and wellbeing, and positive and negative effectiveness (PANAS). This experiment could determine that the order in which participants write could change the writing paradigm from the completely separating life experiences into strictly negative expression and strictly positive expression. In conclusion, results showed that writing about negative and positive events created further benefits of writing allowing individuals to put negative events in perspective while focusing on the presence of positive life events

Diversity of historical ancestry and personality traits across 56 cultures

Prior research has found that the diversity of a culture's ancestry over the previous 500 years—its historical heterogeneity—has an impact on existing cultural differences in social behavior in adaptive ways. The present paper examined whether historical heterogeneity, which reflects the degree to which a culture's population has a long-term legacy of interacting with people from different cultural backgrounds, would be related to individual personality traits in that culture. Using a large sample of respondents from a variety of world cultures, the results found that historical heterogeneity was associated with greater openness to experience. The findings suggest that openness to experience may have been socialized more strongly in diverse societies because this trait promotes tolerance of differences and facilitates cooperation. These results highlight the importance of considering social–historical factors in understanding the origin of cultural traits

Origin of structural and kinematical properties of the Small Magellanic Cloud

We investigate structural, kinematical, and chemical properties of stars and gas in the Small Magellanic Cloud (SMC) interacting with the Large Magellanic Cloud (LMC) and the Galaxy based on a series of self-consistent chemodynamical simulations. We adopt a new "dwarf spheroidal model" in which the SMC initially has both old stars with a spherical spatial distribution and an extended HI gas disk. We mainly investigate SMC's evolution for the last 3 Gyr within which the Magellanic stream (MS) and the Magellanic bridge (MB) can be formed as a result of the LMC-SMC-Galaxy interaction. Our principal results, which can be tested against observations, are as follows. The final spatial distribution of the old stars projected onto the sky is spherical even after the strong LMC-SMC-Galaxy interaction, whereas that of the new ones is significantly flattened and appears to form a bar structure. Old stars have the line-of-sight velocity dispersion (sigma) of ~ 30 km/s and slow rotation with the maximum rotational velocity (V) of less than slow rotation with the maximum rotational velocity (V) of less than 20 km/s and show asymmetry in the radial profiles. New stars have a smaller sigma than old ones and a significant amount of rotation (V/sigma >1). HI gas shows velocity dispersions of sigma = 10-40 km/s a high maximum rotational velocity (V ~ 50 km/s), and the spatial distribution similar to that of new stars. The new stars with ages younger than 3 Gyr show a negative metallicity gradient in the sense that more metal-rich stars are located in the inner regions of the SMC.Comment: 21 pages, 21 figures (5 color), accepted by PAS

When Your Partner Cheats: Financial Infidelity in Committed Couples

The present study evaluated the affective, behavioral, and cognitive responses of 203 participants who were queried about their romantic partners’ potential financial infidelity as well as their own. Results were analyzed through the lens of the ABC model (affect, behavior, cognition) and indicated that participants would be much more upset and less accepting if their romantic partner: filed for bankruptcy without their partner’s knowledge, gambled away money without telling their partner, lied to cover up a debt, kept a secret account, took out savings without consulting their partner, spent money on pornographic material without telling their partners, hid credit card statements, or kept a raise or a bonus secret. Further, the only behavior that elicited a willingness to leave the relationship was filing for bankruptcy without informing the romantic partner. Clinical implications and future research directions are also discussed

Financial Infidelity in Couple Relationships

Four hundred and fourteen participants answered questions regarding financial habits within the context of the couple relationship. The Big Five Personality Inventory and a Martial and Life Satisfaction Scale were used to determine the incidence and factors associated with financial infidelity. Results indicated that 27% of participants have kept a financial secret from their partner. Furthermore, both marital and life satisfaction were lower for participants who have experienced financial infidelity than in those who have not. Finally, conscientiousness, a factor from the Big Five Personality Inventory, showed a significant difference, suggesting that more organized individuals were less likely to keep financial secrets. Clinical implications are also discussed