Baby Artichokes Stuffed With Crab Salad

Name: Baby Artichokes Stuffed With Crab Salad
Ingredients: 1 lemon, halved, plus 2 teaspoons lemon juice; 20 baby artichokes; 1/4 cup extra-virgin olive oil; 1 large carrot, finely diced; 1 large celery rib, finely diced; 1/4 cup finely diced onion; Salt and freshly ground pepper; 1 cup dry white wine; 1/4 cup white wine vinegar; 1/2 teaspoon black peppercorns; 1/2 teaspoon coriander seeds; 2 bay leaves; 8 thyme sprigs; 3 tablespoons crème fraîche; 1 tablespoon snipped chives; 1/2 pound jumbo lump crabmeat