{'fraction_non_alphanumeric': 0.02610966057441253, 'fraction_numerical': 0.010443864229765013, 'mean_word_length': 4.907692307692308, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Solid state quantum memory

Quantum memory is the key element of quantum repeater, long distance quantum communication and quantum network. Usually, hot atoms, cold atoms, trapped single atom and Bose-Einstein Condensate can be used as quantum memory. From the year of 2008, solid state memory based on rare-earth ion doped crystal becomes one of the most promising quantum memories.