High purity single photons entangled with an atomic qubit.

Trapped atomic ions are an ideal candidate for quantum network nodes, with long-lived identical qubit memories that can be locally entangled through their Coulomb interaction and remotely entangled through photonic channels. The integrity of this photonic interface is generally reliant on the purity of single photons produced by the quantum memory. Here, we demonstrate a single-photon source for quantum networking based on a trapped 138Ba+ ion with a single photon purity of g (2)(0)=(8.1±2.3)×10-5 without background subtraction. We further optimize the tradeoff between the photonic generation rate and the memory-photon entanglement fidelity for the case of polarization photonic qubits by tailoring the spatial mode of the collected light.

Multispecies Trapped-Ion Node for Quantum Networking.

Trapped atomic ions are a leading platform for quantum information networks, with long-lived identical qubit memories that can be locally entangled through their Coulomb interaction and remotely entangled through photonic channels. However, performing both local and remote operations in a single node of a quantum network requires extreme isolation between spectator qubit memories and qubits associated with the photonic interface. We achieve this isolation by cotrapping ^{171}Yb^{+} and ^{138}Ba^{+} qubits. We further demonstrate the ingredients of a scalable ion trap network node with two distinct experiments that consist of entangling the mixed species qubit pair through their collective motion and entangling a ^{138}Ba^{+} qubit with an emitted visible photon.

[Vulvovaginitis. Occurrence and importance of mixed and unclassifiable pictures]. / Vulvovaginitida. Výskyt a význam smísených a "nezaraditelných" obrazu.

OBJECTIVE: To evaluate the occurrence of mixed and unclassifiable vulvovaginitis (i.e. those, which fulfill the diagnostic criteria of several diagnostic units or no diagnostic unit) in symptomatic and asymptomatic women. TYPE OF STUDY: Prospective study. METHODS: In 412 women (115 of them asymptomatic) the authors established the diagnosis of vulvovaginitis on the basis of gynecological examination, pH, the amine test and microscopic examination according to Giemsa and Gram. RESULTS: Mycosis was diagnosed in 15.5% women (in 9,6% of asymptomatic ones), lactobacillosis in u 5.6% (in 7.0% of asymptomatic), anaerobic vaginosis in 10.7% (8.7% of asymptomatic), aerobic vaginitis in 7.7% women (4.3% of asymptomatic). U 15.0% mixed infections were diagnosed (in 61% asymptomatic). U 29.4% symptomatic women the diagnostic criteria were not fulfilled for any nosological unit. CONCLUSION: Vulvovaginal mycosis, lactobacillosis, anaerobic vaginosis, aerobic vaginosis were considered as dysmicrobia conditions. The authors demonstrated a high occurrence of more units ("clear" diagnoses to "mixed" diagnoses being in the ratio of 1.62:1). The authors also demonstrated a high occurrence of mixed infections in asymptomatic women (36.0%). On the contrary, in 29.4% of symptomatic women the diagnosis could not be established, the findings being "normal" or "unclassifiable".

[The effect of diazepam and flumazenil on pulsatile secretion of prolactin and LH in women]. / Vliv diazepamu a flumazenilu na pulsní sekreci prolaktinu a LH u zen.

The authors examined the effect of diazepam and flumazenil on prolactin and LH secretion in women. The experiment lasted 12 hours during which specimens of venous blood were collected for assessment of LH and prolactin after 10-minute intervals. After 5 hours to a group of 8 women (4 in the luteal and 4 in the follicular stage of the cycle) flumazenil was administered--3 x 10 mg i.v. after 30 minute intervals, and to a group of 7 women (3 in the follicular and 4 in the luteal stage of the cycle) diazepam was administered--10 mg i.v. after 30-minute intervals. Flumazenil administration did not affect the LH or prolactin secretion. Diazepam caused in 3 of 4 women in the luteal phase of the cycle a significant rise of the prolactin secretion (p < 0.001), in the remaining women in the luteal phase and 3 women in the follicular stage a rise of prolactin was recorded but it did not reach statistical significance. The LH level was significantly influenced (i.e. decreased) in one of 7 women.