وفّر 50٪ من خلال الاشتراك السنوي في مجرة واحصل على تصفح لا محدود لأفضل محتوى عربي على الإنترنت.
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هي عبارة عن تمثيل رياضي لحالة كمومية معينة للكيوبت، يمكن للباحثين من خلالها تحديد ومعالجة حالات مختلفة من هذه التغيرات الكمومية داخل الكرة.
تمت تسمية المفهوم على اسم الفيزيائي فيليكس بلوخ الذي قدّم هذا المفهوم في ورقة بحثية بعنوان "الحث النووي" عام 1946. وبلوخ هو عالم فيزيائي سويسري أميركي حصل على جائزة نوبل في الفيزياء عام 1952 لعمله الرائد في تطوير طريقة الرنين المغناطيسي النووي (NMR) لدراسة الخصائص المغناطيسية للنواة الذرية.
تتكون الحالة الأساسية للكيوبتات من القيم إما صفر أو واحد أو الاثنين معاً وتسمى حالة التراكب الكمومي. لتوضيح مسارات الكيوبت يبلغ قياس قوس الكرة 360 درجة، يكون طول المسار من القطب الشمالي للجنوبي هو 180 درجة.
لتغيير حالة الكيوبت على كرة بلوخ نقوم بتدويرها فقط، مثلاً إذا كان الكيوبت في القطب الشمالي وقيمته صفر، نقوم بتدوير كرة بلوخ 180 درجة ليصبح بالقطب الجنوبي وقيمته واحد.
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